Bald Eagle had been at high risk of extinction due to its

Options

A. Large size
B. Low reproductive potential
C. High trophic level
D. Change in migratory route

Answer

**Step-by-Step Solution:**

1. **Understanding Extinction**: The first step is to understand what extinction means. Extinction occurs when there are no more individuals of a species alive anywhere in the world. It is a natural process that can happen over time due to various factors.

2. **Identifying Factors of Extinction**: Next, we need to identify the factors that can lead to extinction. Some common factors include:
- Large body size
- Low reproductive potential
- High trophic level
- Changes in migratory routes

3. **Analyzing the Options**: Now, let's analyze the provided options:
- **Large Size**: While large size can make a species more vulnerable to extinction due to resource requirements, it is not the primary reason for the Bald Eagle's risk.
- **Low Reproductive Potential**: This factor can contribute to extinction, but Bald Eagles do have a moderate reproductive rate.
- **High Trophic Level**: This is a significant factor. Being at a high trophic level means that the Bald Eagle is a top predator, which can make it more susceptible to changes in the ecosystem and food supply. This can lead to a higher risk of extinction.
- **Change in Migratory Route**: Changes in migratory patterns can affect food availability and breeding, but it is not the primary reason for the Bald Eagle's extinction risk.

4. **Conclusion**: After analyzing the options, the most appropriate answer is that the Bald Eagle had been at high risk of extinction due to its **high trophic level**.

**Final Answer**: High trophic level.

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