a tick feeding on a deer a lion hunting a zebra a dandelion growing in a grass lawn a dolphin communicating with another dolphin
I gave my students this multiple choice question: Which is an example of symbiosis?

Only one answer is correct among these 4 choices:
- a tick feeding on a deer
- a lion hunting a zebra
- a dandelion growing in a grass lawn
- a dolphin communicating with another dolphin

Could you tell me which one is correct?

a tick feeding on a deer