Fact 1: Flagella help prokaryotes move.

Fact 2: Flagella are hair-like projections from the surface of cells.

Given the two facts above, answer the question "What helps prokaryotes move?" with the following options: 
- sensory neurons
 - heat energy
 - Feet.
 - Wheels.
 - Hair-like projections.
 - Moving vans.
 - Chemical energy
 - kinetic energy


 

     Hair-like projections.    