Kangaroo rats -

Options

A. Have a generalized diet
B. Avoid eating fats
C. Do not need to drink water
D. Are insensitive to heat

Answer

**Step-by-Step Solution:**

1. **Understanding the Habitat of Kangaroo Rats:**
- Kangaroo rats are primarily found in the North American desert. This environment is characterized by extreme dryness and limited water availability.

**Hint:** Consider the adaptations of animals living in arid environments.

2. **Analyzing Water Requirements:**
- Due to the scarcity of water in their habitat, kangaroo rats have developed unique adaptations to minimize water loss. They do not rely on drinking water directly from external sources.

**Hint:** Think about how animals adapt to survive in environments where water is scarce.

3. **Internal Water Production:**
- Kangaroo rats fulfill their water needs through internal fat oxidation. When fats are metabolized, water is produced as a by-product. This allows them to survive without drinking water.

**Hint:** Recall the metabolic processes that can produce water in animals.

4. **Concentration of Urine:**
- To further conserve water, kangaroo rats produce highly concentrated urine. This adaptation minimizes water loss from their bodies.

**Hint:** Consider how animals can adapt their excretory systems to conserve water.

5. **Evaluating the Options:**
- Option A: "Have a generalized diet" - This is not a specific feature of kangaroo rats.
- Option B: "Avoid eating fats" - This is incorrect as they rely on fats for water production.
- Option C: "Do not need to drink water" - This is correct; they meet their water needs through fat oxidation.
- Option D: "Are sensitive to heat" - While they may have adaptations to deal with heat, this is not a defining feature.

6. **Conclusion:**
- The correct answer is **Option C: do not need to drink water**. Kangaroo rats have adapted to their environment by utilizing internal fat oxidation to meet their water requirements.