The alimentary canal in human has length of

Options

A. `6-9 m`
B. `2-5 m`
C. `10-28 m`
D. `1-2 m`

Answer

To determine the length of the alimentary canal in humans, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Alimentary Canal**: The alimentary canal is a continuous tube that extends from the mouth to the anus. It includes several organs such as the esophagus, stomach, and intestines.

2. **Identifying the Length**: The question asks for the length of the alimentary canal in humans. It is important to note that the length can vary among individuals.

3. **General Knowledge**: Based on biological studies, the average length of the alimentary canal in adults is approximately 30 feet.

4. **Conversion to Metric**: To convert feet to meters, we can use the conversion factor where 1 foot is approximately 0.3048 meters. Therefore, 30 feet is about:
\[ 30 \text{ feet} \times 0.3048 \text{ meters/foot} \approx 9 \text{ meters} \]

5. **Conclusion**: Based on the information gathered, we can conclude that the length of the alimentary canal in humans is approximately between 6 to 9 meters.

6. **Final Answer**: Therefore, the correct option is **6 to 9 meters**.