Although she was happy in the relationship, Joan decided to break up with her boyfriend several weeks ago. He tried contacting her for several days afterward, but after several weeks without any response from Joan, he stopped trying to contact her. Then, one day, Joan accidentally sends her ex a text message asking about his day. After this message, he starts frequently texting and calling Joan again. This reappearance of the previously extinguished behavior is an example of

Reinstatement of responding

Explanation:

Reinstatement of responding can be defined as a recovery response. When a response that was previously stated, but later it was recovered by the person is reinstatement. It is a kind of restating the statement.

In the given case, the later response of Joan can be defined as a reinstatement of responding. Because she restated or recovered her previous response.

So, the correct answer is the reinstatement of responding.

the 2nd option is the answer

answer; the above statement is (true);