Step 1: Understanding the Concept:
Within the evolutionary history of primates, Anthropoids are broadly divided into two main geographical and evolutionary groups: New World monkeys and Old World monkeys.
Step 2: Key Formula or Approach:
Identify the characteristics and typical examples of New World monkeys versus Old World monkeys based on evolutionary biology.
Step 3: Detailed Explanation:
New World monkeys are native to the Americas (Central and South America). They typically have broad, flat noses and often possess prehensile (grasping) tails. Examples include spider monkeys, howler monkeys, and squirrel monkeys.
Old World monkeys are native to Africa and Asia. They have downward-facing nostrils and lack prehensile tails. Examples include baboons, macaques, and langurs.
Among the given options, spider monkeys are the only primates that belong to the New World monkey category.
Step 4: Final Answer:
Spider monkeys belong to the New World monkey group, corresponding to option (C).