Fact 1: Alight bulb requires electrical energy to produce light.

Fact 2: Electricity or electrical energy, is produced at a power plant.

Given the two facts above, answer the question "What does a light bulb require to produce light?" with the following options: 
- sunlight
 - adding heat
 - darkness
 - motivation
 - sun's heat
 - fear
 - an electron lens
 - Power plant


 

        Power plant 