The term that best describes why people choose to be parents is what?

• A. Reciprocal altruism
• B. Inclusive fitness
• C. Proximate causation
• D. Distal causation

Answer: (A)

Reciprocal altruism describes actions that are costly now but yield future benefits when others return the favor. In the context of parenting, the substantial time, resources, and energy invested in offspring can be seen as a form of this exchange: the present investment increases the chances that the offspring survive, reproduce, and contribute back to the family or social network later on. That long-term payoff—through offspring success and strengthened social bonds—helps explain why people choose to be parents despite the costs.

Inclusive fitness explains gene propagation through relatives, and proximate causation looks at immediate mechanisms driving behavior (hormones, brain processes), while distal causation focuses on ultimate evolutionary explanations rather than social exchange. The idea of reciprocal altruism specifically captures the idea of investing now with the expectation of future return, which is why it best describes the motivation behind choosing to become a parent in this context.