Bank deposits the nation’s economy by a) providing protection for consumers from theft. b) giving banks the money to loan and invest. c) providing protection for banks on investments. d) giving consumers the ability to save money.

I believe the answer is: B) giving banks the money to loan and invest.

When an individual deposit his/her money in the bank, the bank could allocate that money to other people who made an account in that bank as a form of loan. This loan often used by the borrower as capital that can help them buy the things that are necessary to expand their businesses.

giving banks the money to loan and invest.

classical republicanism, also known as civic humanism, is a form of republicanism  developed in the renaissance inspired by the governmental forms and writings of  classical  antiquity, especially such  classical  writers as aristotle, polybius, and cicero.