Answer:
The correct answer will be option- (D) Robins.
Explanation:
Robins are the birds found in areas where earthworms can be observed as they feed on the earthworms like in America or Europe.
The robins follow type II survivorship curves which are presented on the graph as a straight line. This straight line shows that the mortality rate remains constant in all the phases of life that are reproductive, pre-reproductive and post-reproductive.
Thus, option-D is the correct answer.
