Age pyramid of a stable population is

Options

A. urn-shaped
B. triangular
C. bell-shaped
D. inverted

Answer

To determine the age pyramid of a stable population, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Age Pyramids**: Age pyramids, also known as population pyramids, visually represent the distribution of various age groups in a population. They typically have three main stages: pre-reproductive, reproductive, and post-reproductive.

2. **Identify the Shapes of Age Pyramids**:
- **Triangular Shape**: This shape indicates a rapidly growing population where the pre-reproductive age group is larger than the reproductive and post-reproductive groups.
- **Bell Shape**: This shape represents a stable population where the numbers of pre-reproductive and post-reproductive individuals are approximately equal.
- **Inverted Pyramid Shape**: This shape indicates a declining population where the post-reproductive group is larger than the pre-reproductive group.

3. **Focus on the Stable Population**: For a stable population, we are particularly interested in the bell-shaped pyramid. In this configuration, the number of individuals in the pre-reproductive age group is similar to that in the post-reproductive age group, indicating a balance in birth and death rates.

4. **Conclusion**: Therefore, the age pyramid of a stable population is best represented by a bell shape.

### Final Answer:
The age pyramid of a stable population is bell-shaped.

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