Answer:
The correct option is B) Darwin
Explanation:
Darwin was the scientists who studied similarities between species all around the globe and believed that all the species came from a common ancestor. Hence, Darwin was the scientist who proposed the idea of studying humans as groups rather than as individuals.
Other options, like option C, are false because Lamarck believed in the theory that organisms acquired traits from the environment as they grew and they could pass these traits to their children. Hence, these studies did not involve the grouping of individuals.
