Final answer:
A nonrestricted savings account does not qualify for the Saver's Credit, while a mutual fund in a 401K account, a mutual fund in a Roth IRA, and a money market account in a traditional IRA do qualify.
Step-by-step explanation:
The Saver's Credit is a tax credit that can be claimed by eligible taxpayers who make contributions to qualified retirement funds. However, not all savings vehicles qualify for this credit.
Out of the options given, a nonrestricted savings account does not qualify for the Saver's Credit. This is because a nonrestricted savings account is not a qualified retirement fund.
The other options mentioned, such as a mutual fund in a 401K account, a mutual fund in a Roth IRA, and a money market account in a traditional IRA, all qualify for the Saver's Credit as they are considered qualified retirement funds.