Carnivores that feed on other carnivores are a. tertiary consumers b. secondary consumers c. primary consumers d. producers

The correct answer is A. Tertiary consumers.

Organisms in the ecosystem can be classified into different trophic level based on their position in the food chain and feeding behavior.

Autotrophic organisms, like algae, plants and some bacteria produce their own food out of sunlight or inorganic matter and are classified into producers.

Herbivores that feed on plants and algae are the primary consumers.

Carnivores that feed on the herbivores are secondary consumers.

And finally, carnivores that feed on other carnivores are the tertiary consumers.