Will the student still qualify as a dependent if...

1) For a 19-year-old full-time college student in 2021, is there a difference if the student:

a) stays away from home for 260 days

b) stays away from home for 330 days

c) stays away from home for 365 days

 

Will the student still qualify as a dependent?

 

2) If the dependent student makes more than $12,000 income, can the parent still claim the child as dependent if the parent is the one that is supporting the child?