Bat can travel with

Options

A. Ears plugged and eyes covered
B. Eyes covered and ears open
C. Ears plugged and eyes open
D. All the above.

Answer

To solve the question "Bat can travel with," we need to analyze the options provided and understand how bats navigate their environment.

### Step-by-Step Solution:

1. **Understanding Bat Navigation**: Bats are known for their unique ability to navigate in the dark using a method called echolocation. This allows them to detect objects and prey without relying on their vision.

2. **Echolocation Mechanism**: Bats emit high-pitched sounds that bounce off objects in their environment. The returning echoes help them determine the distance, size, and shape of these objects.

3. **Analyzing the Options**:
- **Option A: Ears plugged and eyes covered**: If their ears are plugged, they cannot hear the echoes, which is essential for echolocation.
- **Option B: Eyes covered and ears open**: This option allows bats to use their echolocation effectively since they can hear the returning echoes while their eyes are not used for navigation.
- **Option C: Ears plugged and eyes open**: Similar to option A, if their ears are plugged, they cannot utilize echolocation.
- **Option D: All of the above**: This cannot be correct since options A and C are not viable for echolocation.

4. **Conclusion**: The best option is **Option B: eyes covered and ears open**. This allows bats to rely solely on their echolocation ability to navigate and travel effectively in their environment.

### Final Answer:
Bats can travel with **eyes covered and ears open** (Option B).

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