Answer:
A
Step-by-step explanation:
Natural selection is the process whereby organisms adapted better to their environment which lead to survive and produce more offspring.
* *Natural selection was expounded by Charles Darwin .
Natural selection is now days believed to be the main process through which evolution occurs.
* It leads to survival of fittest and extinct the other which are not fit with environment.
*As here in the case of rabbits, those that strictly eat grass will even survive after drought.
But the rabbits that strictly eat berries and flowers will not be able to survive because they were strictly dependent on berries and flowers for their food.