Which of the following factors would not limit the growth of a population?

Options

A. Emigration
B. Immigration
C. Disease
D. Mortality

Answer

To solve the question "Which of the following factors would not limit the growth of a population?" we need to analyze each of the given options: immigration, emigration, disease, and mortality.

### Step-by-Step Solution:

1. **Understanding the Terms**:
- **Immigration**: This refers to the movement of individuals into a population from outside. This generally increases the population size.
- **Emigration**: This is the movement of individuals out of a population. This leads to a decrease in population size.
- **Disease**: The presence of disease typically leads to increased mortality rates, which decreases the population size.
- **Mortality**: This term refers to the death rate within a population. Higher mortality rates lead to a decrease in population size.

2. **Analyzing Each Option**:
- **Immigration**: As explained, immigration increases the population size, thus it does not limit growth.
- **Emigration**: This decreases the population size, hence it limits growth.
- **Disease**: This leads to higher mortality rates, which limits population growth.
- **Mortality**: Higher mortality means more deaths, which limits population growth.

3. **Identifying the Correct Answer**:
- Among the options, immigration is the only factor that does not limit the growth of a population. Instead, it contributes to an increase in population size.

4. **Conclusion**:
- The factor that would not limit the growth of a population is **immigration**.

### Final Answer:
**Immigration**