Answer: C. an online savings account
Explanation:
An online savings account is known to be a savings account which permit an account holder to manage money through the internet. This account can only be accessed through online and money can be transferred to another account electronically in order to make withdrawal easier. Furthermore, it makes banking convenient for an individual. Thus, it offers higher interest rate than other savings account and the fees charged by the bank on the account is usually low.
Interest rate is the sum of money which a borrower pays to a lender for borrowing money from him.