Answer:
Ambushing.
Step-by-step explanation:
Betty blackmailing Nelson and his family is a poor listening habit because she uses the information she heard to her advantage. People who tend to ambush usually listens very carefully so that they collect information, like Betty, to use it against the other person (in this case, Nelson). These people are constantly looking to ambush and trap the other person, usually to prove or support a strong personal belief of their own. In this exercise, Betty does it to ambush and blackmail Nelson and his family.