Question

In extreme heat, __________ can dangerously strain your engine.

A. refueling too often

B. hills

C. using the heater

Answer 1

A is the answer. In extreme heat, refuelling too often can dangerously strain your engine.

Think about the other answers. It does not have any correlation with hills and there are no engines in heaters. So A would make most sense if you were unsure but the answer is definitely A.