Fact 1: Sonar is used to find the location of an object.

Fact 2: Surface ships use sonar to locate and track submarines.

Given the two facts above, answer the question "How do ships find submarines?" with the following options: 
- guns
 - Computer
 - Sight
 - move
 - Sonar
 - sound
 - Diving
 - Satellite


 

     Sonar    