What defines a vegetable?

The definition of a vegetable is based on its classification as an edible part of the plant, excluding the flower. This encompasses a variety of plant parts, including leaves (like spinach), stems (like celery), roots (like carrots), tubers (like potatoes), and bulbs (like garlic). By focusing on the edible nature of these parts, the definition captures the diversity of vegetables and their uses in cooking and nutrition.

Other options do not align with the broad and practical classification of vegetables. For instance, while some vegetables may grow above ground, many important ones, like carrots and potatoes, grow underground. The notion that vegetables are always high in calories is inaccurate, as many vegetables are low in calories and are instead valued for their nutrients and fiber. Lastly, not all vegetables contain seeds; for example, leafy greens and other non-seed-bearing plant parts are still classified as vegetables. Therefore, the correct answer highlights the essential characteristic that distinguishes vegetables in a culinary context.