Answer the following question: Fact 1: Producing thrust causes something to move. Fact 2: Each engine produces 6,000 lb of thrust. Given the two facts above, what causes something to move?

Possible answers:
(a). hair.
(b). power.
(c). kinetic.
(d). energy.
(e). mass.
(f). engines.
(g). motility.
(h). clouds.
Answer:
(f).