Final answer:
Attraction due to similarity, where shared interests and outlooks facilitate connection and relationship building, is the factor described in the student's scenario.
Step-by-step explanation:
The situation described by the student about the attraction between two people based on their shared love of political engagement and optimistic outlooks is an example of attraction due to similarity. Similarity in background, attitudes, and lifestyle is a significant factor influencing attraction, as people tend to form relationships with others who are like them, a concept known as homophily. This shared commonality can make it easier to get along and connect on various levels, leading to potential friendships or romantic relationships.