What is true regarding organisms that are described as autotrophs?

Organisms referred to as autotrophs are unique in their ability to produce their own food using one of two primary methods: photosynthesis or chemosynthesis. Photosynthetic autotrophs, such as plants, algae, and certain bacteria, utilize sunlight to convert carbon dioxide and water into glucose and oxygen, while chemosynthetic autotrophs, such as some bacteria found in hydrothermal vents, derive energy from chemical reactions, often involving inorganic molecules.

This ability to synthesize their own food is what differentiates autotrophs from heterotrophs, which must obtain energy by consuming other organisms, either directly or indirectly. The other options imply restrictions or inaccuracies about the nature of autotrophs, such as their dependency on other organisms or limiting their environment, which do not reflect their fundamental capabilities as energy producers in diverse ecosystems.