Under what circumstances will a reinforcer make the target response more likely to occur again?

A) if it is a primary reinforcer
B) if it is a positive reinforcer
C) if it is a negative reinforcer
D) regardless of whether it is a positive or negative reinforcer, a reinforcer makes a response more likely to occur.

Positive Reinforcer

A positive reinforcer is any stimulus that, when introduced after a behavior, increases the frequency or likelihood of that behavior occurring again.

Negative Reinforcer

In behaviorism, an unpleasant stimulus that, when removed following a behavior, increases the likelihood of that behavior being repeated.

Primary Reinforcer

Something that is naturally rewarding because it fulfills a basic biological need or desire.