Logistic growth occurs when three is

Options

A. Asexual reproduction only
B. sexual reproduction only
C. No inhibition from crowding
D. A fixed carrying capacity

Answer

### Step-by-Step Solution:

1. **Understanding Logistic Growth**: Logistic growth refers to a population growth pattern that occurs when a population's growth rate decreases as it approaches its carrying capacity. This means that the population grows rapidly at first but slows down as resources become limited.

2. **Identifying Carrying Capacity**: The carrying capacity is the maximum number of individuals that an environment can sustainably support. This capacity is determined by the availability of resources such as food, water, and space.

3. **Population Growth Dynamics**: In logistic growth, the population size increases over time until it levels off at the carrying capacity. This leveling off occurs because resources become limited, leading to increased competition among individuals.

4. **Resistance Factors**: As the population approaches the carrying capacity, various resistance factors come into play, such as limited food, space, and other resources. These factors prevent the population from growing indefinitely.

5. **Conclusion**: Logistic growth occurs when there is a fixed carrying capacity in the environment, meaning that the population cannot exceed a certain size due to limited resources.

### Final Answer:
Logistic growth occurs when there is a fixed carrying capacity in the environment.

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