The Visibility Rule (Conditional View) property on an OmniScript element allows the developer to define a condition that determines whether the element is shown based on prior user input or merged data.

From OmniStudio Best Practices for Modular Script Design, OmniScript Actions are the preferred mechanism to invoke another OmniScript within a parent OmniScript. This approach enables reusability and modularization, especially when a function (like updating billing information) is common across many interactions.
A). OmniScript Action ?This is the correct and standard method for embedding or launching one OmniScript from another. It allows developers to reuse common scripts without duplicating logic.

Deleting a row in Version 3 will only affect that version, not any previous or future versions. The row that contains the Code CA-SF will remain in Versions 1 and 2, as well as any versions created after Version 3. The other options are incorrect because they imply that deleting a row in one version will affect other versions as well.

The PREVIEW tab in OmniScript allows the developer to test the DataRaptor Extract by providing a record ID and viewing the output data. This is a quick and easy way to troubleshoot whether the DataRaptor Extract is retrieving data correctly.

According to the OmniScript Action Elements page, a DataRaptor Extract Action can be used to
"get data from one or more Salesforce records" and an HTTP Action can be used to "get, save, or delete data through a web application programming interface (API)".