Which of the following is an advantage of group therapy used by psychotherapists?

A) It allows the therapist to work with several clients at once.
B) It guarantees that people reveal their personal problems to group members.
C) It ensures that people from the same family are not included in the same group.
D) It allows the therapist to facilitate one-to-one therapy without making the client feel lonely.

Group therapy allows the therapist to work with several clients at once, maximizing their time and resources. This can lead to more cost-effective treatment and give clients the opportunity to learn from each other's experiences. However, group therapy does not guarantee that people reveal their personal problems to group members, nor does it ensure that people from the same family are not included in the same group. Lastly, group therapy is not one-to-one therapy, as the therapy is conducted in a group setting.