You can find the answer to this problem by process of elimination. I'll show you.
Checking with the bank to know what fees it has is a good idea. You can get an idea of what its fees are and how to avoid them.
If you didn't know, if you use an ATM at a bank other than the one you use, they charge you extra money. So using the ATM at his bank is a good idea, because you don't get charged.
Comparing various banks' fees and services is a good idea, because you can see which banks are the cheapest to use.
This leaves (C) as the last option. Avoiding the use of a check register really doesn't help you save money and avoid fees. The correct answer to your question is option (C). I hope I helped! (:
