The correct answer is "income tax is a direct tax".
A direct tax is imposed on a person, instution or property, rather than on a transaction, that is the case of indirect taxes. Direct taxes are, for example, income tax or property tax.
Income taxes are also progressive, because the % that each person needs to pay is related to their income: the % increases when the income is larger. It the % increased for lower incomes it would be regressive. Proportional taxes establish the same % for all taxpayers, regardless of their income .