Bald eagle has been at high risk of extinction due to

Options

A. Large size
B. Low reproductive potential
C. high trophic level
D. change in migrating route

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks why the bald eagle is at high risk of extinction. We need to analyze the possible reasons provided in the options.

2. **Evaluating the Options**:
- **Option A: Large Size**: The size of an organism does not necessarily correlate with its risk of extinction. For example, large animals like cows are not endangered.
- **Option B: Low Reproductive Potential**: This refers to the ability of a species to reproduce. If a species has low reproductive potential, it means they reproduce less frequently or in smaller numbers. This can lead to a situation where the loss of individuals cannot be compensated, making the species more vulnerable to extinction. This is a strong candidate for the reason behind the bald eagle's risk.
- **Option C: High Trophic Level**: While being at a high trophic level can make a species more vulnerable, it is not a definitive reason for extinction. Many top carnivores, like lions and tigers, are not currently at high risk of extinction.
- **Option D: Change in Migrating Route**: Changes in migratory patterns do not directly affect the population size or risk of extinction. Animals can adapt their migration without necessarily impacting their survival rates.

3. **Identifying the Correct Answer**: After evaluating all the options, it becomes clear that the most valid reason for the bald eagle being at high risk of extinction is **Option B: Low Reproductive Potential**. This means that the bald eagle cannot reproduce enough to replace its population when individuals die.

4. **Conclusion**: The bald eagle is at high risk of extinction primarily due to its low reproductive potential, which prevents the population from recovering after losses.