Fact 1: Alight bulb requires electrical energy to produce light. Fact 2: Light is electromagnetic radiation. Given the two facts above, a bulb requires electrical energy to produce what?

Available choices:
[1]. heat production;
[2]. heat is produced;
[3]. rain or sun shine;
[4]. Help plants grow;
[5]. electromagnetic radiation;
[6]. Earth revolving around the sun;
[7]. hydrogen and oxygen;
[8]. basic building blocks of life;
The answer is:
[5].