Self-fulfilling prophecy is a belief that becomes true because of the behavior that appears due to this belief, while self-concept is an individual’s reflection of him or herself from things he or she believes about themselves and what other people think of her or him. Indirect evidence is another term for circumstantial evidence – a type of evidence that links two things through an inference.
From all these options, it clear that none fits the definition given in the question except for the last one, which is the answer: (B) social comparison.