Answer:
The correct answer is option A, Yes Sarah is a qualifying child of her parents.
Explanation:
Sara studies at a university which is not in her own home state. She live in the other state for studying. She stays there for 8 months in a year. During the year, Sarah earned $4500 of income working part time. Her support totaled $20000 out of which she paid $7000 and her parents paid $12000 and her grandparents paid $1000. This means that Sarah did not provide more than even half of the support. She is a full time student, and also less than 24 years in age. So she is the qualifying child for her parents.