**Core Concept:** Maslow's Hierarchy of Needs is a psychological theory developed by Abraham Maslow, a psychologist, to explain human motivation and growth. The hierarchy consists of five levels, each representing a specific set of needs that must be met in ascending order before a person can move on to the next level. The five levels are:

1. Physiological Needs: Basic biological requirements such as food, water, air, sleep, and sex.
2. Safety Needs: Security, stability, and protection from harm or danger.
3. Social Needs: Interpersonal relationships, belonging, and love.
4. Esteem Needs: Achievement, competence, recognition, and respect.
5. Self-actualization Needs: Realization of one's full potential, self-improvement, and personal growth.

**Why the Correct Answer is Right:** Abraham Maslow included self-actualization as the highest, fifth level in his hierarchy of needs. Self-actualization refers to the desire to grow, develop, and achieve one's full potential. It represents the ultimate goal of human motivation and is only fulfilled when all previous levels are met.

**Why Each Wrong Option is Incorrect:**

A. Maslow did not include altruism as part of self-actualization needs. This option is incorrect because Maslow did not focus on social or altruistic values, but rather emphasized personal growth and self-improvement.

B. While Maslow discussed self-actualization, he did not specifically mention "intellectual needs." The correct answer is right, as self-actualization involves personal growth and fulfillment, which includes intellectual development.

C. Maslow did not mention self-realization. Although self-actualization is about personal growth and fulfillment, the term "self-realization" is not directly related to Maslow's concept.

D. Maslow did not include "self-enhancement" in his hierarchy. The correct answer is right, as self-actualization involves personal growth and fulfillment, which includes self-enhancement.

**Clinical Pearl:** Understanding Maslow's hierarchy of needs helps medical professionals understand human motivation and values, which can positively impact patient care and communication. Understanding these needs can facilitate empathy and compassionate care in healthcare professionals, leading to improved patient satisfaction and outcomes.