Fact 1: Aairplane is used for moving people across bodies of water.

Fact 2: Airplanes and cars are equipped with engines.

Given the two facts above, answer the question "transportation equipped with what is used for moving people across bodies of water" with the following options: 
- snorkels
 - engines
 - energy
 - Fuel cells
 - Limbs
 - wheels
 - Weight
 - tracks


 

  engines       