Final answer:
Projected cognitive similarity is best demonstrated by friends with similar hobbies, as it involves the perception of shared thoughts and attitudes based on common interests.
Step-by-step explanation:
The person who demonstrates projected cognitive similarity is c. Friends with similar hobbies. Projected cognitive similarity refers to the assumption that others have similar thoughts, beliefs, preferences, or attitudes as oneself, particularly when there is some level of common background or shared interest. Friends with similar hobbies likely share certain preferences and attitudes about their common interests, which leads to a projection of cognitive similarity.
Research, such as the Minnesota Study of Twins Reared Apart, has indicated that identical twins, whether raised together or apart, have strong resemblances in their personalities due to their genetic similarities. However, projected cognitive similarity is less about genetic makeup and more about perceived commonalities in thought and behavior arising from shared interests and experiences.
Homophily is a related concept where people are attracted to and form relationships with others who are similar to themselves, as evidenced in friendships and other social relationships. This is supported by studies that show we tend to form connections with individuals who have similar backgrounds, attitudes, and lifestyles.