Explanation
Using Data Workshop, you can perform the following tasks:
Load vast amount of data into the database: You can use the Data Load option to load data from various file formats such as XLSX, CSV, XML, and JSON into a table or a collection in your database. You can also use the Data Load Wizard to guide you through the steps of loading data.
Export vast amount of data from the database into a file: You can use the Data Unload option to export data from a table or a collection in your database into a file in CSV or JSON format. You can also use the Data Unload Wizard to guide you through the steps of exporting data.
Load data using various file formats such as XLSX, CSV, XML, and JSON: You can use the Data Load option to load data from different file formats into your database. You can choose the file format from a list of supported formats or let Oracle APEX detect it automatically.
The other option is incorrect because:
Delete data from the database: You cannot use Data Workshop to delete data from the database. You can use SQL Commands or SQL Scripts in SQL Workshop to run DELETE statements to delete data from the database.
Verified References: [About Data Workshop] [Loading Data] [Unloading Data]

Explanation
A theme is a collection of templates and stylesheets that define the layout and appearance of an application.
You can create a custom theme for an application by using the Create Theme Wizard or by copying an existing theme. If you want to use a custom theme for anotherapplication in the same workspace, you can copy the theme to that application by using the Copy Theme option in Shared Components. However, if the master theme (the original theme) may still require changes, you need to subscribe the copied theme to the master theme and refresh the theme whenever there are changes in the master theme. This solution guarantees that any changes to the master theme are reflected in the copied theme by using a synchronization process that updates templates and stylesheets based on their subscription status. Verified References: [Creating Themes - Oracle Help Center], [Managing Theme Subscriptions - Oracle Help Center]

Explanation
Automations are a sequential set of PL/SQL actions that are triggered by query results. They are used to monitor data and then perform the appropriate action2. Some use cases of automations are:
Monitoring log tables and raising an alert when there is an issue. For example, an automation can query a log table for any errors and send an email notification to the administrator if any errors are found2.
Approving specific requests. For example, an automation can query a table for any pending requests and approve them automatically based on some criteria2.
Sending email alerts at a particular time of the week. For example, an automation can query a table for any overdue tasks and send a reminder email to the assignees every Monday2.
Deleting a database record based on an end user's request is not a use case of automations, as it does not involve querying data and triggering actions based on the query results. This can be achieved by using a PL/SQL process or a dynamic action on the page where the user requests the deletion34.

Explanation
A page item is a component that is part of an HTML form and can accept user input or display output. There are many types of page items that can be placed on a page in APEX, such as text fields, text areas, radio groups, checkboxes, date pickers, select lists, popup LOVs, shuttles, and so on. Each type of page item has different properties and attributes that affect its appearance and functionality. Three of the types of page items that can be placed on a page are:
Checkbox: A checkbox is a page item that displays one or more options that can be selected or deselected by the user. A checkbox can have either static values or dynamic values based on a list of values (LOV). A checkbox can also have different display styles, such as pill button or switch.
Date Picker: A date picker is a page item that displays a text field with an icon that opens a calendar popup when clicked. A date picker allows users to enter or select a date value in a specific format. A date picker can also have different attributes, such as minimum or maximum date, display format, or time picker.
Select List: A select list is a page item that displays a drop-down list of options that can be selected by the user. A select list can have either static values or dynamic values based on a list of values (LOV). A select list can also have different attributes, such as multiple selection, null value display text, or cascading LOV.

Explanation
A faceted search page is a type of page that allows end users to filter data by applying one or more facets. A facet is a set of filters based on a column or expression. By default, when end users select a facet value, they need to click on an Apply button for that facet to apply the filter to the report. To make report filtering automatically executed when any facet value changes, you need to navigate to the faceted search region Attributes, and disable the Batch Facet Changes attribute. The Batch Facet Changes attribute determines whether end users need to click on an Apply button for each facet or not. When this attribute is disabled, the report is automatically refreshed when any facet value changes. The other options are not relevant to the report filtering behavior. Verified References: [Faceted Search Attributes - Oracle Help Center], [Batch Facet Changes - Oracle APEX]