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 the Bald Eagle**: The Bald Eagle is a bird of prey found in North America, known for its distinctive white head and tail. It is a top predator and is often associated with strength and freedom.

2. **Identifying the Risk of Extinction**: The question states that the Bald Eagle is at high risk of extinction. This means that the population of Bald Eagles has significantly decreased and they are facing threats that could lead to their complete disappearance.

3. **Analyzing the Options**: The options provided are:
- Option 1: Large size
- Option 2: Low reproductive potential
- Option 3: High trophic level
- Option 4: Change in migratory route

4. **Understanding Trophic Levels**: Trophic levels refer to the position an organism occupies in a food chain. The higher the trophic level, the fewer individuals there are, and the more susceptible they are to extinction due to environmental changes and food availability.

5. **Evaluating the Options**:
- **Option 1 (Large size)**: While size can affect survival, it is not the primary reason for extinction.
- **Option 2 (Low reproductive potential)**: This can contribute to extinction but is not the main factor for the Bald Eagle.
- **Option 3 (High trophic level)**: Being at a high trophic level means that Bald Eagles have fewer food sources and are more vulnerable to changes in the ecosystem.
- **Option 4 (Change in migratory route)**: This could affect their survival but is not the primary reason for their risk of extinction.

6. **Conclusion**: The most significant reason for the Bald Eagle being at high risk of extinction is its high trophic level. This makes it more susceptible to environmental changes and decreases its chances of survival.

**Final Answer**: The Bald Eagle had been at high risk of extinction due to its high trophic level (Option 3).

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