Vital index of a population is represented as

Options

A. `("Natality ")/("Mortality")xx100`
B. (Natality-Mortality)`xx100`
C. `("Mortality")/("Natality")xx100`
D. `("Natality")/(100xx"Mortality")`

Answer

To solve the question regarding the representation of the vital index of a population, we will break down the steps involved in understanding the concept of the vital index and how it is calculated.

### Step-by-Step Solution:

1. **Understand the Concept of Vital Index**:
- The vital index is a measure that compares the number of births to the number of deaths in a population over a specific period of time.

2. **Define Key Terms**:
- **Natality**: This refers to the birth rate, which is the number of births per thousand individuals in a population per year.
- **Mortality**: This refers to the death rate, which is the number of deaths per thousand individuals in a population per year.

3. **Formulate the Vital Index**:
- The vital index can be expressed mathematically as the ratio of natality (birth rate) to mortality (death rate).
- Therefore, the formula for the vital index is:
\[ \text{Vital Index} = \left( \frac{\text{Natality}}{\text{Mortality}} \right) \times 100 \]

4. **Identify the Correct Option**:
- Based on the formula derived, the correct representation of the vital index from the provided options is:
- **Option 1**: Natality upon Mortality multiplied by 100.

5. **Conclusion**:
- The vital index of a population is represented as the ratio of natality to mortality, multiplied by 100.

### Final Answer:
The vital index of a population is represented as Natality upon Mortality multiplied by 100.