World population is increasing continuously due to

Options

A. increased food supply
B. increased fecundity
C. industrialization
D. decreased infant mortality

Answer

**Step-by-Step Solution:**

1. **Understanding Population Growth**: The world population is defined as the total number of people living in the world. It is continuously increasing due to various factors.

2. **Key Factors Influencing Population**: The two primary factors that affect population growth are the birth rate (natality) and the death rate (mortality).
- An increase in the birth rate leads to population growth.
- A decrease in the death rate also contributes to population growth.

3. **Analyzing the Options**: The question provides several options to identify the reason for the continuous increase in world population:
- **Option A: Increased food supply** - While food supply is essential for sustaining a population, it does not directly cause an increase in population.
- **Option B: Increased fecundity** - Fecundity refers to the fertility of individuals. Although it can influence birth rates, it is not the primary reason for the continuous increase in population.
- **Option C: Industrialization** - Industrialization can improve living standards and healthcare, but it does not directly lead to an increase in population.
- **Option D: Decreased infant mortality** - This refers to the reduction in the death rate of infants. When infant mortality decreases, more infants survive to adulthood, contributing to an increase in the overall population.

4. **Conclusion**: Among the options provided, the most significant factor contributing to the continuous increase in world population is decreased infant mortality. Therefore, the correct answer is **Option D**.

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