May I ask what book and what are the answer choices?
Answer:
human being, a culture-bearing primate classified in the genus Homo, especially the species H. sapiens. Human beings are anatomically similar and related to the great apes but are distinguished by a more highly developed brain and a resultant capacity for articulate speech and abstract reasoning
Explanation:
A or b but I would go for A
You didn't provide the sentences, however, they probably contain things like vivid descriptions of things or their smells or how they feel when you touch them. If they are extremely realistic, then they are really vivid and this should be your correct sentence.