Concept:Commercial banks accept deposits from the general public, but central banks do not deal directly with individual customers.
Explanation:Central banks perform functions such as issuing currency, managing treasury bills, and withdrawing old notes from circulation.
However, central banks do not collect deposits from the public.
Accepting deposits from customers is a primary function of commercial banks and cannot be performed by central banks.
Therefore, the function that commercial banks perform but central banks cannot perform is collecting deposits from the public.
Answer:B. collection of deposits from the public