Hello!
The answer is: Account 3 earns 1.2 percent, compounded monthly.
Why?
We are talking about how many money will be earned in interested, which means that the higher percentage in a shorter period of time will earn a higher amount of money.
So, let's check the given options:
Account 1: Earns 1,2 percent compounded yearly, it means just 0,1 percent each month.
Account 2: Earns 1 percent compounded yearly, it means 0,08 percent each month.
Account 3: Earns 1,2 percent compounded monthly and it means 14,4 percent each year.
Account 4: Earns 0,5 percent compounded monthly, which means 6 percent per year.
So, the account 3 will earn more money in interest.
Have a nice day!