all of the following taxpayers are claimed as dependents on someone else's return. Which one must file a 2021federal income tax return?

1.Charity (18) gross income 11,450 ($11,220 from wages plus $230 from interest).

2. Sancha (2) gross income $350, all from interest.

3. Maddox (16) gross income $4,200 all from wages

4. Lane (16) gross income $9075 (8700 from wages plus $375 from interse).