To qualify as head of household, how much must Aidan pay in support for his mother who passed away?

To qualify as head of household, a taxpayer must meet specific requirements regarding their eligibility, including the amount of support provided to a qualifying relative. In the case of Aidan, in order to claim head of household status, he must have provided more than half of his mother's support during the year preceding her passing.

The threshold for support is typically established at more than 50% of a person's total support. Therefore, in this situation, if Aidan's total contribution towards his mother’s living expenses, including things like food, housing, medical care, and transportation, amounted to more than $4,000, then he would meet the requirement needed to file as head of household. This distinct support amount enables Aidan to fulfill the criteria crucial for this tax status, allowing him to benefit from potentially lower tax rates and higher standard deductions compared to other filing statuses.

For completeness, the other amounts mentioned in the options would be insufficient to meet the more than 50% support threshold required for Aidan to qualify as head of household, which is why those options would not be valid in this context.