Final answer:
The correct answer to when qualified distributions from Roth 401(k) accounts can be made is after the account has been open for at least 5 taxable years and the employee is at least 59½ years of age, so the answer is a) 5; 59½.
Step-by-step explanation:
Qualified distributions from Roth 401(k) accounts are those made after the account has been open for 5 taxable years and the employee is at least 59½ years of age. Hence, the correct answer is a) 5; 59½. Roth 401(k)s are a type of defined contribution plan where the employer and employee can contribute, with tax-deferred growth and potential tax-free withdrawals, provided certain conditions are met. These conditions include the account being open for at least five years and the employee reaching the age of 59½, ensuring that retirees can manage their savings effectively without the immediate tax burden, and have the flexibility of tax-free withdrawals in retirement when they might be in a lower tax bracket.