Which of the Four Postulates of Darwinʹs Theory of Evolution

Multiple Choice

Which of the four postulates of Darwinʹs theory of evolution was not well established when On the Origin of Species was first published but is overwhelmingly supported today?

A) Individuals with advantageous traits survive longest and have the most offspring.
B) Some individuals in a population survive and reproduce better than do other individuals.
C) Individuals in a population differ physically from one another in many ways.
D) Some differences among individuals in a population are due to genetics and are heritable.