Income tax is how much you income on that respective you have to pay taxes.The more you income the more you have to pay on the other hand tariff basically based on export and import tax that u have to pay.suppose toyota company exports their cars all over the world then they should be pay a certain amount of money to exports their cars .so hopefully u get some difference between those two.
The first answer would be answer c. then question 2 would be c also. the third is b
(A) The office is led by the chief of staff, who serves as a key adviser to the president.