Distinguish between the costs of having a basic checking account and an interest-bearing checking account.

Basic Checking account vs interest-bearing checking account.
The main difference of these two accounts is the interest. 
Basic checking account does not earn interest. Regardless of how long the money stays in the bank, whatever amount it is, it is still the same amount. 
Interest-bearing checking account as the name implies earns interest. Sometimes, it must maintain a certain amount for it to earn interest. 
Both accounts may have atm access or online/mobile access aside from its check book. Both accounts may also be subject to penalties if its balances fall below the required minimum maintaining account.  

Answer(d); /// in the absence of transaction costs,private parties can solve the problem of externalities on their own;

Bis the answer to it