Question

which organisms in a food web feed on the primary consumers? secondary consumers other primary consumers primary producers

Explanation:

In a food web, primary producers (like plants) are eaten by primary consumers (herbivores). Secondary consumers are carnivores or omnivores that eat primary consumers. Primary consumers don't typically eat other primary consumers (as they are herbivores focused on plants - primary producers). So the organisms that feed on primary consumers are secondary consumers.

Answer:

secondary consumers