At a treatment center, people who display a desired behavior receive coins that they can later exchange for other rewards. This is an example of a(n) . reward primary reinforcer transference token economy

"Token economy" is the right option.

Explanation:

A type of behavioral therapy that's used in several psychiatric institutions; residents are associated with good actions with tokens, as well as the coupons can be tried to cash here for extrinsic activities.This includes paying for good actions with measurable incentives. The basic principle is to reinforce desired behavior.

Other provided options aren't relevant to the current situation in question. Therefore the answer to the above seems to be the right one.