Step 1: Understanding the Concept:
Everett Rogers' Diffusion of Innovations theory analyzes sociological communication dynamics between interpersonal actors.
Step 2: Detailed Explanation:
In communication theory (Everett Rogers, 1983):
1. Homophily: The degree to which a pair of individuals who communicate and interact share identical attributes, beliefs, education, socioeconomic status, and cultural background. Homophilous communication is more effective and comfortable.
2. Heterophily: The degree to which interacting pairs are different in these attributes.
3. Empathy: The ability to project oneself into another's role.
Step 3: Final Answer:
Therefore, this similarity is called Homophily, corresponding to option (A).