A trainer wants a pigeon to quickly learn to peck a button to obtain food.She also wants to be sure the behavior is resistant to extinction.So,she should use ________ reinforcement until the response is mastered followed by ________ reinforcement.

A) positive;negative
B) negative;positive
C) continuous;partial
D) partial;continuous

The trainer should use continuous reinforcement until the behavior is mastered. This means that the pigeon receives food every time it pecks the button. Once the behavior is consistent, the trainer should switch to partial reinforcement, which means that the pigeon only receives food for every few pecks or randomly instead of every time. This type of reinforcement is more resistant to extinction, meaning that the behavior will continue even if the reinforcer (food) is not given every time. Therefore, the best choice is C, continuous reinforcement until the response is mastered followed by partial reinforcement.