Life is sustainable with water only because

Options

A. it makes `90%` of the protoplasm
B. translocation of nutrients inside the body occurs with the help of water
C. water loss in form of sweating helps to maintain body temperature
D. all of these

Explanation

To answer the question "Life is sustainable with water only because," we will analyze the options provided and explain why each is important for sustaining life.

### Step-by-Step Solution:

1. **Understanding Protoplasm**:
- Protoplasm is the living content of a cell, which is primarily composed of water. It constitutes about 70-90% of the cell's content.
- This high water content is essential for various cellular processes, including metabolic reactions and maintaining cell structure.

2. **Translocation of Nutrients**:
- Water plays a crucial role in the translocation (movement) of nutrients within the body.
- Nutrients are transported through the bloodstream, which is predominantly composed of plasma (about 90-95% water). This means that water is essential for the distribution of nutrients to cells.

3. **Temperature Regulation**:
- Water is vital for regulating body temperature.
- When the body heats up, it loses water through sweating. This process of evaporation helps cool the body down, maintaining a stable internal temperature, which is crucial for the proper functioning of enzymes and metabolic processes.

4. **Conclusion**:
- All three options presented highlight the importance of water in sustaining life.
- Therefore, the correct answer is that life is sustainable with water only because of its role in making up protoplasm, facilitating nutrient translocation, and helping maintain body temperature through sweating.

### Final Answer:
Life is sustainable with water only because it constitutes a major part of protoplasm, aids in the translocation of nutrients, and helps in regulating body temperature through sweating.

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