The answer is C) Robert loves to help others but has little interest in an extravagant lifestyle. He chose a career as a social worker.
Robert values lie in helping others, he doesn't want extravagant things in life, just to live comfortably and happily by helping other people and putting their needs first, therefore he chose a career where he would be assisting people everyday and sticking to his values. Also social work isn't a highly paid job, but that isn't important to Robert.
All the others chose jobs that go against their own values and expectations.