Which one of the following is a stem vegetable?

✅ Explanation: Knol-khol, also known as Kohlrabi, is a unique vegetable where the edible portion is the swollen stem. The stem swells above the ground, forming a bulb-like structure that is consumed.

🛑Other Options Explanations:
-Option A: Carrot: Carrots are root vegetables. The edible part is the taproot, which stores nutrients.
-Option B: Sweet potato: Sweet potatoes are also root vegetables. The storage roots are enlarged and rich in carbohydrates.
-Option D: Radish: Radishes are also root vegetables. The edible part is the swollen taproot.