Which of the following makes the plants capable of preparing their own food?

Chlorophyll is a pigment that gives plants their green colour, and it helps plants create their own food through photosynthesis.

Carotene and xanthophyll are the two classes of carotenoids, which are tetraterpene plant pigments, serving as accessory pigments in photosynthesis. They are responsible for giving red-orange to yellow colour, especially to fruits and vegetables.