Lungs and kidneys Heart and lungs Brain and kidneys Heart and liver
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: In your body, what two organs work together to make sure that oxygen gets to all the other organs of your body?
Possibilities:
- Lungs and kidneys
- Heart and lungs
- Brain and kidneys
- Heart and liver

Heart and lungs