Answer:
A. Airline ticket is bought by a student. FINAL SERVICE THAT INCREASES PRIVATE CONSUMPTION
B. New airplanes bought by Southwest Airlines. FINAL GOODS THAT INCREASE PRIVATE INVESTMENT
C. Cheese bought by Domino's. INTERMEDIATE GOODS THAT ARE NOT INCLUDED IN THE GDP
D. Your purchase of a new iPhone. FINAL GOOD THAT INCREASES PRIVATE CONSUMPTION.
E. New house bought by Bill Gates. FINAL GOOD THAT INCREASES RESIDENTIAL INVESTMENT (AT CONSTRUCTION VALUE, NOT PURCHASE VALUE)