The correct option is B Charles Darwin
Charles Darwin visited Galapagos islands, the chain of 22 islands located in the Pacific Ocean on the west coast of South America, during his voyage on HMS Beagle. Since Galapagos islands were once connected with South America mainland, many birds of the island resembled those of mainland. This observation laid the foundation of his concept of adaptive radiation and his theory of evolution. Thus, the correct answer is option B.