Sulphur bacteria are examples of

The correct answer is B. Heterotrophs.

Sulphur bacteria are heterotrophs because they cannot produce their own food and must obtain it from other sources. They are chemotrophs, which means that they obtain energy from the oxidation of inorganic compounds, such as hydrogen sulfide.

• Carnivores are heterotrophs that eat other animals.
• Herbivores are heterotrophs that eat plants.
• Saprophytes are heterotrophs that decompose dead organisms.
• Autotrophs are organisms that can produce their own food from inorganic compounds.