Drop the State field to a view, you will get >1k unknown.
Drop the Country to the Filters Shelf and Select the United States, all unknowns should be gone.
Also, drop the Order Date to the Filters Shelf and choose Years as:
Graphical user interface, application Description automatically generated

Check for the Year 2013.
Drop the Sales field to the Label in the Marks card, your view should look like this:
Graphical user interface Description automatically generated with medium confidence

Now use the Lasso Selection tool from the Map tools:
Graphical user interface, diagram Description automatically generated

And create the group of states as per our answer options.
Example - for New York, Massachusetts, Rhode Island, Similarly, do for other 3 options as well.
Map Description automatically generated

Duplicate this worksheet and remove the Latitude and Longitude from the view and drop this new dimension of groups to the view. California, Idaho, Nevada is the right answer.
Graphical user interface, text, application Description automatically generated

Drop the Orders Date to the Columns shelf and change it to the Month Date Value and drop the profit to the rows shelf. Your view will look like this:
Graphical user interface, text, application Description automatically generated

Go to the Analytics tab and drop the Forecast to your view.
Right-Click on the view, Select Forecast -> Forecast Options. Change the Ignore last to 0 months, Graphical user interface, text, application Description automatically generated

$35,152 is the correct answer.
Graphical user interface, chart, line chart Description automatically generated

Cube data sources can only be used as the primary data source for blending data in Tableau.
All others are true.
Refer: https://help.tableau.com/current/pro/desktop/en-us/cubes.htm

Drop the Age to the columns and change the aggregation to AVG.
Drop Gold Medals field to filter and select All values ->
Graphical user interface, text, application, email Description automatically generated

Change 1 from 0.
Graphical user interface, application Description automatically generated

Refer to the quick comparison of data blending and custom geocoding -
https://help.tableau.com/current/pro/desktop/en-us/maps_customgeocode_datablend.htm