Final answer:
Social capital is the glue that holds communities together. It refers to the connections and relationships that individuals form within a community and fosters community engagement and participation.
Step-by-step explanation:
Social capital is best described as the glue that holds communities together. It refers to the connections and relationships that individuals form within a community, which in turn create a sense of trust, reciprocity, and shared norms. These social networks and bonds foster community engagement, participation, and collective problem-solving.