You create a new column in a Dataverse table. The column’s data type is Choices. You add a new set of choices. 
What will be the default scope of these Choices?

Answer options:

A.Local
B.Public
C.Private
D.Global
E.Entity

Correct Answer: D 
When you create a new column in a Dataverse table, you need to define the data type. One of the data types is Choices. This data type contains a list or set of items (choices) that users can select from the interface dropdown. You can choose already defined sets or create a new set. By default, the new set of items has a Global scope. Other users in the same environment can utilize your set for creating a column with the same data type in different tables. 
When you create a new set, there are two scope options: Global choice (the default) and Local choice. If you want to use the set only within the current table, you can change Global to Local`s scope. 
Important to remember that you cannot change a column`s data type or the Choices scope after their creation. But you can add new items to already created Choices. 

All other options are incorrect. 
For more information about the Dataverse column creation and data types, please visit the below URLs: 

https://docs.microsoft.com/en-us/powerapps/maker/data-platform/create-edit-global-option-sets
https://docs.microsoft.com/en-us/powerapps/maker/data-platform/custom-picklists