Read the following text and answer the following question on the basis of the same :
Excessive exploitation of species , whether a plant or animal reduces the size of its population , so it becomes vulnerable to extinction . Such as Dodo and passenger pigeon have become extinct due to over exploitation by humans . Thus the world is facing accelerated rates of species extinctions , largely due to human interference .
Factors which make species susceptible to extinction are :

Options

A. Small population size
B. Higher status of trophic level
C. Inability to switch over to alternate food
D. All of these

Answer

D

Explanation

Explanation : Population traits which make species suceptible to extinction are small population , higher status of trophic level and inability to switch over to alternate foods.