genetic diversity is not achieved. competitive species are introduced. changes in behavior start to develop. smaller populations fail to breed.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Habitat becomes a major factor in the extinction of a species when
Possibilities:
- genetic diversity is not achieved.
- competitive species are introduced.
- changes in behavior start to develop.
- smaller populations fail to breed.

competitive species are introduced.