Certificate In Psychology (CPSY) Practice Exam 2025 - Free CPSY Practice Questions and Study Guide

The correct answer highlights that an infant's cry has a physiological impact, specifically noting an increase in heart rate and blood pressure, which are common responses in adults when they hear a baby cry. This reaction is part of the body's natural response mechanism, often linked to heightened alertness and readiness to respond to the needs of the infant.

When an adult hears a baby's cry, it can trigger instinctual responses due to evolutionary and biological factors that promote caregiving behaviors. This reaction serves to prompt adults—especially parents—to take quick action to attend to the infant's needs, thereby enhancing the infant's chances of survival.

Factors like the stress response may also be activated, which can manifest in physiological changes such as increased heart rate and blood pressure, preparing the body for potential physical activity or caregiving. This response is less pronounced in childless adults or individuals who are not biologically related to the child, but many still experience some minimal reaction.

Overall, the body's automatic response to an infant's crying serves a crucial function in social bonding and caregiving behavior, showcasing the interconnections between emotional and physical responses in the context of early human development and relationships.