Carlos is looking to open an account at a bank, but wants to avoid as many fees as possible. which would not minimize fees paid to a bank?
a) checking with the bank to know what fees it has so he can avoid them.
b) only using his bank's atms to avoid atm fees.
c) avoiding the use of a check register.
d) comparing various banks' fees and services.

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! (: