Users must have at least Viewer permissions to the data store in order to read or write data

Answer us A :https://docs.appian.com/suite/help/23.2/Data_Stores.html#:~:text=A%20user%20must%20have%20at,access%20to%20the%20data%20store.

A is the answer

As per Documentation, The user executing write to DSE activity must have Viewer rights to the selected data store, in order to update or insert information.

Letter D is a better answer than A because the "Viewer" permission to the data store only allows a user to read data from the data store entity, while the "Editor" permission is required to modify the data in the data store entity using the "Write to Data Store Entity" smart service. This is because the "Write to Data Store Entity" smart service is a modification operation that changes the data in the data store entity. Therefore, users must have write access (i.e., Editor permission) to perform this operation.