Answer: Psychologist; psychiatrist
Explanation: Mary wants to study a career where she can help people with their interpersonal problems, and in this case, the best option would be psychology. Psychology is a science that is responsible for the study of human behavior and within its branches it has therapies focused on helping people with their different problems.
Although it is true that from the area of psychiatry it can be done, psychology is supported at work through speech, where it gives the patient the opportunity to speak and use techniques, such as cognitive-behavioral, to improve their life. If Mary then has a greater interest in helping people in another way (such as using drugs), she could study psychiatry and would already have a more complete preparation since she would not only use techniques from the area of psychology but she would also rely on the medical area.