A. Both Darwin and Wallace formulated the natural selection theory at the same time.
Explanation:
Charles Darwin was a naturalist, a biologist, and a geologist and is known for his contributions on the theory of evolution and widely accepted as the foundational concept in science which was jointly formed along with the Alfred Wallace and named it as natural selection.
Alfred Wallace a British biologist knows or his theory of evolution from a natural selection presented his paper jointly with darwin in 1858. Which later made darwin to publish his ideas on the origin of species.
