Fact 1: Tidal energy can be used to produce electricity.

Fact 2: Electricity is electrons in motion.

Given the two facts above, answer the question "what can tidal energy be used to produce?" with the following options: 
- Light passing through water
 - neutrons
 - moon
 - protons
 - rays or beams
 - electrons in motion
 - mechanical waves
 - objects that have mass


 

      electrons in motion   