Around ...% of body weight in adult human is contributed by muscles.

Options

A. `40%`
B. `20%`
C. `16%`
D. `15%`

Answer

To determine the percentage of body weight in an adult human that is contributed by muscles, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the percentage of body weight that muscles contribute in an adult human.

2. **Consider the Options Provided**: The options given are:
- Option 1: 40%
- Option 2: 20%
- Option 3: 16%
- Option 4: 15%

3. **Recall the General Knowledge**: From biological studies, it is known that muscles make up a significant portion of body weight in healthy adults.

4. **Identify the Correct Percentage**: Research indicates that muscles contribute approximately 40% of the total body weight in a healthy adult human.

5. **Eliminate Incorrect Options**:
- 20% is too low.
- 16% is also too low.
- 15% is again too low.

6. **Conclude the Answer**: Based on the information and elimination of incorrect options, the correct answer is **40%**.

### Final Answer:
Around **40%** of body weight in an adult human is contributed by muscles.

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