Final answer:
Savers supply money to the financial system and earn interest on their savings, as they are on the supply side of the financial market.
Step-by-step explanation:
The question regarding how savers interact with the financial system can be clearly understood by looking at the relationship between savers and borrowers within the financial markets. Savers supply money to the financial system when they put their money in savings vehicles like banks, stocks, and bonds. In return for supplying their money, savers earn interest, which is a payment they receive for allowing their money to be used by others. On the other hand, borrowers demand financial capital and pay interest on the money they borrow. Therefore, the correct answer to the question 'Savers _______ money to/from the financial system and ______ interest' is 'a. supply : earn'.