Please answer the following question: Fact 1: Aflashlight requires a source of electricity to produce light. Fact 2: Electricity flows when a battery is connected to an object like a watch, toy, or flashlight. Given the two facts above, answer the question "What do flashlights require to produce light?" with the following options: - sunlight - energy - a light source - batteries - circuits - energy usage - heat energy - power
A:
batteries