Tight junctions are the multiprotein complexes. The function of these complexes is to prevent the leakage of the transported water and solutes. These junctions seals the pathway between two cells. These junctions form an impermeable barrier against the fluid. The tight junctions hold the cells together and are protective in nature. The tight junction are present on the epidermal cells of the skin it keeps the skin waterproof.
The answer is letter a. Social Capital. Social capital refers to the social networks and the reciprocal norms associated with these networks that encourages people to do things for each other.
