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

Fact 2: An ocean is a vast body of salt water.

Given the two facts above, answer the question "what are airplanes used for moving people across?" with the following options: 
- highways
 - streams
 - Euphrates
 - Mountains
 - humans
 - oceans
 - jets
 - homes


 

      oceans   