Answer the following question given this paragraph: 

Imagine scuba diving and coming upon a jellyfish. Would you be startled if the jellyfish suddenly started to glow with bright yellow light, like the jellyfish in the picture above? If so, then the jellyfish would have done its job. Jellyfish give off light to startle possible predators. The light they emit is visible light.


Q: What do jellyfish give off to startle possible predators?

 Choices:

- energy

- plankton

- electricity

- light

A:
light
