Final answer:
The annual interest rate for an account that compounds monthly at a rate of 2.5% is 3.05%.
Step-by-step explanation:
The annual interest rate for an account that compounds monthly at a rate of 2.5% can be calculated using the formula:
Annual interest rate = (1 + Monthly interest rate)^12 - 1
Plugging in the given rate of 2.5% into the formula:
Annual interest rate = (1 + 0.025)^12 - 1 = 0.03047 = 3.05%
Therefore, the correct answer is 3.05%.