Who formulated the theory of natural selection in evolution?

Explanation

The theory of natural selection in evolution was formulated by a scientist called Charles Darwin. The theory explains that species of organisms can change over time through the process of evolution. In this process, traits that are helpful for survival and reproduction become more common in a population, while traits that are harmful become less common. This results in the gradual development of new species from existing ones. It is important to note that there were other scientists who contributed to the understanding of evolution, but Darwin's theory of natural selection is considered to be one of the most significant and widely accepted explanations of how evolution occurs. Therefore, the correct answer to the question is option D: Charles Darwin.