Manish is saying to his students. "It forms main constituent of the body approximately to 80% of our human body is made out of it. It plays an important role in maintaining temperature balance and electrolytic balance in the body. It also form 80% of our blood". Manish is referring to

Options

A. (a) protein
B. (b) minerals
C. (c) water
D. (d) blood plasma

Answer

To solve the question posed by Manish regarding the main constituent of the human body, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Key Information**:
- Manish states that approximately 80% of the human body is made out of a certain substance.
- This substance plays a crucial role in maintaining temperature balance and electrolytic balance in the body.
- It also constitutes 80% of our blood.

2. **Analyze the Options**:
- **Option A: Protein** - While proteins are essential for the body, they do not make up 80% of the body mass.
- **Option B: Minerals** - Minerals are vital for various bodily functions but do not account for 80% of body composition.
- **Option C: Water** - Water is known to make up about 60-80% of the human body and is crucial for temperature regulation and electrolyte balance.
- **Option D: Blood Plasma** - Blood plasma is primarily made of water, but it does not constitute 80% of the entire body.

3. **Evaluate the Role of Water**:
- Water is indeed the main constituent of the body, accounting for approximately 80% of body weight.
- It helps in maintaining homeostasis, including temperature regulation and electrolyte balance.
- Furthermore, it constitutes about 80% of blood volume.

4. **Conclusion**:
- Based on the analysis, the correct answer is **Option C: Water**. Manish is referring to water as the main constituent of the human body.

### Final Answer:
Manish is referring to **Water**.

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