The most accurate statement regarding the benefits of the Federal Reserve issuing repurchase agreements (repos) and reverse repurchase agreements (reverse repos) is:
b. Repos result in a temporary increase in a bank's reserves and maintain liquidity in the banking system. Banks can sell reverse repos back to the Federal Reserve at a higher price in a short period of time.
This statement correctly describes the function of repos in providing liquidity and increasing reserves temporarily, as well as how reverse repos work with the Federal Reserve.