Personal Information & Dependents

What are my Filing Status options?
What is the benefit of using the filing status "head of household"?
What are the dependency tests?
Can we still claim our 21-year-old daughter as a dependent?
Who is considered a student?
What is considered support?
My child is a student attending college and working part-time.
Does he have to file a tax return?
My daughter is my dependent and receives dividend income.
Does she need to file a federal income tax return?