According to Lamarckism, long necked giraffes evolved because

Options

A. nature slected only long necked ones
B. humans preferred only long necked ones
C. short necks suddenly changed into long necks
D. of strethcing of necks over many generations by short necked ones.

Answer

D

Explanation

According to Lamarckism, the ancestors of giraffe had small neck and forelimbs and were like horses. They were residing in places with no surface vegetation, therefore, they had to stretch their neck and forelimbs to take the leaves for food. This led to slight elongation of these parts. Whatever they acquired in one generation was trasnmitted to the next generation with the result that a race of long forelimbed giraffes were developed.