You need to allow users to add notes to the records in the Dataverse custom table. 
What should you set in table properties to achieve your goal?

Answer options:

A.Enable queues
B.Enable attachments
C.Enable connections
D.Enable SharePoint document management

Correct Answer: B 
The Dataverse table has a list of properties. Some of them a user is required to provide during a table creation (required fields like Display name or Name, etc.). The rest can be set if needed. Several of these table settings cannot be disabled after you enable them. One of them is Enable attachments (Number 1). 
Setting this option enables users to attach notes and files to the table’s records. Users can add documents from their computers and photos from their mobiles. There is a file size limit of 10 Mb. For all standard tables, this option is enabled by default. 

Option A is incorrect because Enable queues (Number 4) puts the records in a central place for everybody to use. If you enable this option, it is not reversible.
Option C is incorrect because Enable connections (Number 2) show how rows in this table are connected to the row in other tables. This option is also not reversible.
Option D is incorrect because Enable SharePoint document management (Number 3) allows the table to participate in SharePoint document integration.
For more information about Dataverse table properties, please visit the below URLs: 

https://docs.microsoft.com/en-us/powerapps/maker/data-platform/data-platform-create-entity
https://docs.microsoft.com/en-us/learn/modules/create-manage-entities/3-enable-attachments