According to Allen's Rule, the mammals from colder climates have

Options

A. shorter ears and longer limbs
B. longer ears and shorter limbs
C. longer ears and longer limbs
D. shorter ears and shorter limbs

Explanation

**Step-by-Step Solution:**

1. **Understanding Allen's Rule**: Begin by defining Allen's Rule, which states that endothermic animals (like mammals) from colder climates tend to have shorter appendages (such as ears and limbs) compared to those from warmer climates. This adaptation helps to minimize heat loss.

2. **Identifying the Characteristics**: According to Allen's Rule, mammals in colder climates will exhibit physical traits that are adaptations to conserve heat. This means they will have shorter ears and shorter limbs compared to their counterparts in warmer climates.

3. **Analyzing the Options**: The question provides four options:
- A) Shorter ears and longer limbs
- B) Longer ears and shorter limbs
- C) Longer ears and longer limbs
- D) Shorter ears and shorter limbs

4. **Selecting the Correct Option**: Based on the understanding of Allen's Rule, the correct answer is option D, which states that mammals from colder climates have shorter ears and shorter limbs.

5. **Conclusion**: Therefore, according to Allen's Rule, mammals from colder climates have shorter ears and shorter limbs to help them retain body heat.

**Final Answer**: Option D - shorter ears and shorter limbs.

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