Final answer:
The rate of return on Jimmy's Roth IRA is 80%.
Step-by-step explanation:
To calculate the rate of return on Jimmy's Roth IRA, we need to find the percentage increase in the account value over the contribution period. The formula to calculate the rate of return is (Ending Value - Beginning Value) / Beginning Value * 100. Substituting in the given values, we get: (162,000 - 89,600) / 89,600 * 100 = 80%. Therefore, the rate of return on Jimmy's Roth IRA is 80%, which is not one of the given options.