Carrying capacity of a population is determined by :

Options

A. Population growth rate
B. Birth rate
C. Death rate
D. Limiting resources

Answer

### Step-by-Step Solution:

1. **Understanding Carrying Capacity**:
- Carrying capacity refers to the maximum number of individuals of a species that an environment can sustain over time without degrading the environment.
- It is a key concept in population ecology.

2. **Factors Influencing Carrying Capacity**:
- The carrying capacity is influenced primarily by the availability of resources in the environment. This includes food, water, habitat, and other essential resources.
- Each environment has a limited amount of these resources, which directly affects how many individuals can be supported.

3. **Evaluating the Options**:
- **Population Growth Rate**: While this indicates how fast a population can grow, it does not directly determine the carrying capacity. A high growth rate does not mean the environment can support that growth if resources are limited.
- **Birth Rate**: Similar to growth rate, a high birth rate does not affect the carrying capacity if resources are insufficient to support the additional individuals.
- **Death Rate**: The mortality rate also does not influence the carrying capacity directly. It may affect population size but not the maximum sustainable population.
- **Limited Resources**: This is the primary factor that determines carrying capacity. The availability of resources dictates how many individuals can be supported in a given environment.

4. **Conclusion**:
- Based on the evaluation of the options, the correct answer is that the carrying capacity of a population is determined by limited resources.

### Final Answer:
- The carrying capacity of a population is determined by **limited resources**.

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