(i'm gonna try to give more reason cause my last comment was deleted)
i think it may be D because that would be the only one to make sense
it wouldn't be A because how would changing their behavior help physical impairments? (it wouldn't)
i don't think it would be B because how could that help..
i don't think it would be C because medication does not help with those kinds of problems, i think,
hope this helps :)
sorry if im wrong :(
When you visualize things you are no longer focused in reality but instead in your own world its people's "happy place". and thats why visualization promotes relaxation and stress reduction.
They should be kept in all of the above