Final answer:
The statement best fits with the theory of conformity, where individuals conform to group norms or expectations. Psychologist Solomon Asch's experiments showed the pressure to conform within a small group, either to be liked or because of perceived group knowledge.
Step-by-step explanation:
The statement, "People learn to conform or deviate from the individuals they spend time with" best fits with the theory of conformity. Conformity is the extent to which an individual complies with group norms or expectations. Psychologist Solomon Asch conducted experiments in the 1950s that showed the pressure to conform within a small group. His studies revealed that people conform either because they want to be liked by the group or because they believe the group is better informed than they are.