​Organisms that can make food themselves from simple substances are called:​

Correct option is B

The correct answer is (B) Autotrophs.​

• Autotrophs are organisms that can produce their own food from simple substances, usually through processes like photosynthesis (in plants) or chemosynthesis (in some bacteria).
• They use basic compounds such as carbon dioxide, water, and sunlight (in the case of plants) to create more complex organic compounds like glucose.

• Heterotrophs: These organisms cannot make their own food and depend on other organisms for nutrition (e.g., animals, fungi).
• Saprotrophs: These organisms, like certain fungi and bacteria, obtain their food by decomposing dead organic matter.
• Holozoic organisms: These organisms ingest solid food for nutrition, typically by consuming other organisms (e.g., animals), but they don't produce their own food like autotrophs.