1. which tax is paid to a third party?
a. direct
b. flat
c. income
d. indirect

"Indirect
This tax would be one that is paid, for example, to a business who then is liable for the same amount to the tax collecting agency, rather than directly to the agency for the amount owed. A good example of this would be a sales tax - the actual money from the consumer is paid to the business, who takes a sales or VAT tax as a intermediary and remits the amount to the government when they file each month."