Persons who use drugs relatively infrequently and define drug use as a pleasurable are called

Persons who use drugs relatively infrequently and define drug use as a pleasurable are called "Recreational Drug User".

Recreational drug use refers to the social or easygoing utilization of a drug. Commonly, clients who enjoy this sort of medication utilize do as such to make or upgrade an experience. This experience might be a music occasion, a get-together or basically heading off to a bar or club. Recreational medication utilize may likewise be done by a person independent from anyone else, outside of a get-together.

Ithink the answer you are looking for is (b).