D. Phytoplankton are most efficient
Answer
you attend to any illness or disease by going to the doctor at the first sign of it
you make sure that your health choices reduce the risk of potentially negative situations.
Explanation:
The answer is a hope it helps
C) Natural selection
When something happens in nature and something changes all of a sudden, the animals tend to adapt to what gives them more chances of survival. As a result, a large amount of the population would attempt to adapt in a way that helps them survive.