Question

what is survival of the fittest?
nature selects the animal or insect.
an animal or insect must be best fitted in their habitat to survive.
animals fight each other to steal food and resources from each and other.
when animals have to eat their babies

Explanation:

Survival of the fittest is a concept from evolutionary theory. It means that organisms best adapted to their environment are more likely to survive and reproduce. The pink and yellow statements align with this. The blue statement is about competition (a part of the process) but not the core concept. The green statement is an extreme and rare behavior not representing the general concept.

Answer:

The statements "Nature selects the animal or insect." (pink) and "An animal or insect must be best fitted in their habitat to survive." (yellow) best represent the concept of survival of the fittest.