Explanation
The two OmniScript features that the consultant should recommend are Response Action and Edit Block. A Response Action is an action that can save or submit data from an OmniScript to a Salesforce object or an external system. The consultant can use a Response Action to allow the user to add, edit, or delete dependents related to their policy via their Community portal. An Edit Block is an element that can display a list of records for the user to view, edit, or delete, using an OmniScript or an Integration Procedure. The consultant can use an Edit Block to display the dependents related to the policy, and allow the user to modify them

Explanation
The data source that is needed when using the TypeAhead element is DataRaptor Extract Action. A TypeAhead element is an element that can display a list of suggestions for the user to select from, as they type in a text field. A DataRaptor Extract Action is an action that can retrieve data from a Salesforce object or invoke a Salesforce API, using SOQL queries or Apex methods. The consultant can use a DataRaptor Extract Action as a data source for the TypeAhead element, to get the contact names from Salesforce and display them as suggestions

Explanation
The data source that the team should use to make progress on the design is Apex Remote. Apex Remote allows the designer to use mock data from an Apex class as a placeholder until the actual endpoint is ready.
DataRaptor is not a data source, but a tool for reading, transforming, and writing data. Apex REST is not suitable for XML format, as it only supports JSON format. Integration Procedures are not needed for this scenario, as there is no data integration involved.