Answer:
Revenue
Step-by-step explanation:
The revenue bills refers to the type of legislations that commonly related to increasing the amount of income that US government can get. This will include things such as Tax legislations, user fees, Custom duties legislation, and Tariff from Import products.
Unlike other type of bills listed on the options, Revenue Bills is the only one that specifically mentioned within the Constitution as something that has to be initiated by the House of Representatives. (more specifically, under Article I, Section 7 of US constitution)