Answer:
C. How trucks help planes
Explanation:
The paragraph you were given is:
It takes a lot of trucks to get an airplane ready to fly. Fuel trucks are very important. They fill the fuel tanks of planes. Baggage trucks carry people’s suitcases to and from planes. Still other trucks deliver food. You might also see mail trucks and cargo trucks. Also standing by at airports are repair trucks.
Statement C is the correct one, as this paragraphs gives many examples of how trucks are of help at the airport - they help prepare airplanes to fly, fill their fuel tanks, repair them, carry people's baggage to and from them. That is the main idea of the paragraph.
Statement B is incorrect, as, while trucks may carry food, that is not the main idea. Statement A is also incorrect, because the paragraph doesn't compare airplanes and trucks, but explain how helpful trucks are.
