The length of small intestine in a human adult is about:
(A) 4.5 m

(B) 1.5 m

(C) 3.5 m

(D) 6.5 m

The correct option is: D

Explanation of the correct option:

The small intestine is the largest part of the alimentary canal in humans. In humans, the small intestine is about 6.5 meters long and the large intestine is about 1.5 meters long.

Explanation of the incorrect option:

Option A: The length of small intestine in a human adult is about 6.5 m

Option B: The length of small intestine in a human adult is about 6.5 m

Option C: The length of small intestine in a human adult is about 6.5 m

Final answer: The length of small intestine in a human adult is about 6.5 m