According to the lecture and textbook reading, psychology is a broad, diverse field of professionals with varied interests. what, if anything, unites the field of psychology per your textbook author?

As per textbook author, the thing that unites the field of psychology is the responsibility and urge to understand, use, or apply the scientific method.

Explanation:

Psychology:

It is defined as the branch of science that deals with the study of behavior and mind of individuals.

In Psychology, we do researches that are beneficial in many fields of life like human development, personal growth, sports, etc.

since it is asking for her reaction to elnora's trouble at school you can rule out any answers with a positive response (b). then you can rule out (d), this is because it does not show the mother's reaction but the daughter's response. that leaves you with two options (a) and (c), by looking at the options you can rule out (c) because it isn't referring back to elnora's issues at school.