The gestalt therapist:

a. is mainly nondirective.
b. freely makes interpretations for the client.
c. assigns homework to bring about specific cognitive and behavior changes.
d. pays attention to the client's nonverbal language.
e. the client understand why he or she is behaving in self-defeating ways.

d. pays attention to the client's nonverbal language.                                

Explanation:

The Gestalt therapy was proposed by Laura Perls, Fritz Perls, and Paul Goodman during 1940, and is described as the humanistic and experimental sort of therapy and is considered to be as the alternative to the psychoanalysis.

Gestalt therapist: The Gestalt therapist follows the principle of Gestalt therapy while giving the therapy session to a client.

Gestalt therapy aims to create awareness in the clients related to the ways of functioning in his or her environment, such as work, friends, family, etc. It includes balance and polarities, figure and ground, personal responsibility, unfinished business, present‐centeredness, etc.

the telephone is the answer