Answer:
The correct option is: a. strength
Explanation:
According to the Bibb Latané's social impact theory, the social impact is the influence on the thoughts, feelings or behavior of an individual created by the imaginary or real actions of others. The three basic forces that result in a social impact are : strength, immediacy and the number of sources.
The strength of the source of impact is the net result of all the factors that influence an individual like trans-situational, situation-specific relational components such as belonging to the same group and the intrapersonal factors like wealth, size, intellect, wealth.
Therefore, the example represents the influence of Bibb Latané's concept of strength on normative conformity.