A/an occurs when an expectation exists that something will happen, and a person behaves in a way (often unconsciously) that actually makes it more likely that the anticipated event will occur.

The answer is Self-fulfilling prophecy. This is an expectation that straightforwardly or in a roundabout way makes itself turn out to be valid, by the very terms of the prescience itself, because of positive criticism amongst conviction and conduct. In spite of the fact that cases of such predictions can be found in writing as far back as antiquated Greece and old India, it is twentieth century humanist Robert K. Merton who is credited with begetting the articulation "unavoidable outcome" and formalizing its structure and results.

jennifer and anderson

Explanation:

Robert has an asymmetrical face with an unusual facial hair style. Jennifer is characterized by a youthful face. Anderson has facial features that are commonly found in an average citizen. Christiana’s face has an uncommon shape. Based on my psychological understanding of physical attractiveness, jennifer and anderson are more likely to be seen as attractive by others.