Why would you use a merge key in a dataset recipe?

After getting approval of the dashboard layout design for a desktop, the Einstein Analytics consultant is ready to start the design process for a mobile layout.
What are three considerations that the consultant should keep in mind when developing the layout? Choose 3 answers

To use the Sales Analytics app, which permission set license do you need?

What can you do on the Edit Field Attributes page when uploading a CSV file to Analytics?

What is a valid permission for a permission set?