Answer:
b. A checking account, or a savings account for other expenses (predictable), and emergencies. 
Explanation:
Peggy needs to pay car insurance 2 times every year. 
She has divided the payment by 6 and saves that amount each month. 
So, the best account in which she can save this money is - A checking account, or a savings account.
Other options are irrelevant as a 401-K retirement fund is some other type of account. It is not used for daily or monthly expenses.
Options C and D are also not correct.