**Question:** Standard of Living (WHO) includes all except-

A. Health
B. Education
C. Income
D. Environment

**Core Concept:** The World Health Organization (WHO) defines the Standard of Living as a composite indicator that reflects the overall living conditions of a population, including factors such as health, education, income, and environment.

**Why the Correct Answer is Right:** The correct answer (D) is chosen because, while the concept of Standard of Living encompasses various aspects of a population's well-being, including health, education, income, and environment, the option D "Education" is already included in the definition of Standard of Living. Among the remaining options, A (Health), B (Environment), and C (Income) are essential components of the Standard of Living.

**Why Each Wrong Option is Incorrect:**

A. Health: Health is a crucial component of the Standard of Living, as it directly influences an individual's ability to participate in daily activities, learn, and contribute to society.

B. Environment: While environmental factors can have an impact on health and overall well-being, they are not the primary focus of the Standard of Living. Health, education, and income are more directly related to the concept.

C. Income: Income is another essential component of the Standard of Living, as higher income levels can lead to improved access to healthcare, education, and better living conditions.

**Clinical Pearl:** The WHO's definition of the Standard of Living emphasizes the interconnectedness of various factors contributing to a population's overall well-being. While each option mentioned (health, education, income, and environment) plays a significant role, the concept is broader and encompasses the overall conditions that shape a population's quality of life.

**Correct Answer:** D. Environment