Q: Fact 1: Aflashlight requires a source of electricity to produce light. Fact 2: Batteries are a very handy source of power. Given the two facts above, what requires a battery to produce light?

Select from the following. [+] peachleaf willow [+] a dog [+] electrically [+] a cat [+] a flashlight [+] energy [+] another battery [+] heat energy
The answer is:
a flashlight