Explanation
The two actions that can be used to change a prospect's Marketing Cloud Account Engagement campaign are:
* Create an automation rule to change Marketing Cloud Account Engagement campaign for prospects meeting certain criteria. An automation rule is a rule that runs continuously in the background and matches prospects based on the criteria you set. You can use an automation rule to perform actions on the matched prospects, such as changing their Marketing Cloud Account Engagement campaign to the one that is relevant to their attributes or behaviors.
* Manually change the prospect's Marketing Cloud Account Engagement campaign when editing the prospect record. You can also change a prospect's Marketing Cloud Account Engagement campaign by editing their prospect record and selecting a different campaign from the drop-down menu. This is useful when you want to change the Marketing Cloud Account Engagement campaign for a single prospect or a small group of prospects.

Explanation
The two Facebook accounts that can be posted to using the Marketing Cloud Account Engagement Facebook connector are Company Pages and Personal Pages. The Marketing Cloud Account Engagement Facebook connector allows you to connect your Marketing Cloud Account Engagement account with your Facebook account, and create and schedule social posts from Marketing Cloud Account Engagement. You can post to any Facebook page that you have admin access to, such as your company page or your personal page. You cannot post to other types of Facebook accounts, such as Video Pages or Linked Instagram Pages, using the Marketing Cloud Account Engagement Facebook connector.

Explanation
The baseline grade will not show on the prospect profile at all times. The baseline grade is the initial grade that Marketing Cloud Account Engagement assigns to all prospects before any adjustments are made based on their attributes. The baseline grade is D by default, but you can change it in your account settings. The baseline grade will only show on the prospect profile if the grade has not changed positively or negatively. Once the grade changes, the baseline grade will be replaced by the current grade. The current grade reflects the prospect's fit for your ideal customer profile based on the criteria you have set. You can view the grade history and the grade changes on the prospect profile. For more details -> 111213

The way that a visitor can convert to a prospect is by submitting a Marketing Cloud Account Engagement form. A visitor is an anonymous person who visits a website that has Marketing Cloud Account Engagement tracking code installed. A visitor can be identified by their IP address, location, browser, device, and pages viewed. A visitor can also be tracked by Marketing Cloud Account Engagement cookies if they have visited the website before. A visitor can convert to a prospect when they provide their email address to Marketing Cloud Account Engagement through a form, a form handler, a landing page, or a custom redirect. A prospect is a known person who has a record in Marketing Cloud Account Engagement and can be associated with a lead or a contact in Salesforce. A prospect can be tracked by their email address, activities, score, grade, and other fields. A prospect can also be segmented, nurtured, and qualified by Marketing Cloud Account Engagement5. Option A is not correct because downloading an eBook does not necessarily convert

According to the Salesforce documentation, the asset that should be applied during the creation of the Marketing Cloud Account Engagement landing page to accomplish the goal of using pre-existing HTML is a layout template. A layout template is a reusable design that defines the structure and style of a landing page. A layout template can be created using HTML, CSS, and JavaScript, and it can include editable regions where the user can add content and forms. A layout template can be applied to multiple landing pages, and it can be used to create custom landing pages with pre-existing HTML. Dynamic content, custom redirect, and stock template are not assets that can be applied during the creation of the Marketing Cloud Account Engagement landing page to accomplish the goal of using pre-existing HTML, as they are related to other aspects of landing page creation, such as personalization, tracking, and design. Reference: Salesforce documentation