Which of the following organism can make their own food?

Autotrophs

The correct answer is Option (4) – Autotrophs

Autotrophs are organisms capable of synthesizing organic compounds, such as glucose, from inorganic substances using energy from sunlight (photosynthesis) or from chemical reactions (chemosynthesis). They are often referred to as "producers" because they produce their own food. Plants, algae, and some bacteria are examples of autotrophs.

The other options are:

• Heterotrophs: These organisms cannot produce their own food and rely on consuming other organisms or organic matter for energy.
• Parasites: Parasites are organisms that live in or on another organism (host) and obtain nutrients from the host, but they do not produce their own food.
• Saprotrophs: Saprotrophs, also known as decomposers, obtain nutrients by decomposing dead organic matter, but they do not produce their own food through photosynthesis or chemosynthesis.