Allicin is a sulfur-containing compound that is produced when garlic cells are damaged (such as by crushing or chopping). It is a bioactive compound found primarily in garlic and is responsible for its pungent odor. Allicin is known for its potential health benefits, including antimicrobial, anti-inflammatory, and cardiovascular benefits.
Garlic has been used for centuries in various cultures not only for culinary purposes but also for its medicinal properties. Allicin is particularly notable for its ability to support immune function and may contribute to lowering blood pressure and cholesterol levels.
Grape (option A), cauliflower (option B), and chilli (option D) do not contain allicin as their main phytonutrient, and while they have their own beneficial compounds, allicin is specific to garlic.
Thus, the correct answer is (C) Garlic.