Polar bears go into __ during winter.

Options

A. aestivation
B. migration
C. hibernation
D. diapause

Answer

To answer the question "Polar bears go into __ during winter," we can follow these steps:

### Step 1: Understand the options given
The options provided are:
- Estivation
- Migration
- Hibernation
- Diapause

### Step 2: Define each term
- **Estivation**: This refers to a state of dormancy that occurs during the summer months to escape high temperatures.
- **Migration**: This is the movement of animals from one location to another, often in search of food or breeding grounds.
- **Hibernation**: This is a state of deep sleep that animals enter during winter to conserve energy and survive harsh conditions.
- **Diapause**: This is a period of suspended development in insects and some other organisms, often in response to environmental conditions.

### Step 3: Relate the terms to polar bears
Polar bears are adapted to live in cold environments, and during winter, they face extreme cold temperatures. To survive these conditions, they enter a state of hibernation.

### Step 4: Conclude the answer
Based on the definitions and the behavior of polar bears, the correct answer is that polar bears go into **hibernation** during winter.

### Final Answer:
Polar bears go into **hibernation** during winter.

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