Which among the following can prepare their own food ?

Plants

The correct answer is Option (3) – Plants

Green plants are autotrophic organisms because they can synthesise their own food by photosynthesis.

During photosynthesis energy from sunlight is converted into chemical energy in the form of organic compounds and oxygen is released as a by-product.

Animals, fungi and several bacteria are heterotrophic organisms and depend on organic compounds synthesized by autotrophs for their nutrition.

Heterotrophs survival depends directly or indirectly on autotrophs .