Explanation:

The correct answer is option 'D' - Brinjal (also known as eggplant or aubergine) cannot be eaten raw. Here's the explanation:

1. Cabbage:
Cabbage is a leafy vegetable that can be consumed both raw and cooked. It is often used in salads, coleslaws, and other raw preparations. Therefore, cabbage can be eaten raw.

2. Tomato:
Tomatoes are fruits that are commonly used as vegetables in culinary contexts. While they are often cooked, tomatoes can also be eaten raw. In fact, they are a popular ingredient in salads and sandwiches.

3. Cucumber:
Cucumbers are another vegetable that can be consumed raw. They are often enjoyed in salads, as a refreshing snack, or used in sandwiches and wraps.

4. Brinjal:
Brinjal, also known as eggplant or aubergine, is a vegetable that is typically cooked before consumption. This is because raw brinjal has a bitter taste and a tough texture. Cooking brinjal helps to soften it and enhance its flavor. Common cooking methods for brinjal include roasting, grilling, frying, or sautéing.

Why can't brinjal be eaten raw?
Brinjal contains a compound called solanine, which gives it a bitter taste and can be toxic in large quantities. Solanine is a natural defense mechanism found in various plants, including potatoes and tomatoes. Cooking helps to break down and reduce the levels of solanine in brinjal, making it safe for consumption.

Therefore, due to its bitter taste and higher levels of solanine, brinjal is not suitable for eating raw. It is best to cook it before including it in your meals to ensure its safety and improve its taste.