Answer it correctly please. Explain your answer . I will rate accordingly with multiple votes. This is my last attempt. Answer only if 100% correct.

A common explanation for the positive effect of social capital on democratic functioning is that a. social networks and norms can be accurately measured by finding the efficient level of public good provision. b. social networks and norms act as complements to formal institutions. c. implementation of government programs is less costly in countries with high social capital. d. Both b. and c. are correct