The one that is not a primary consumer would be the organism that does not feed on plants directly.
They are organisms within a food chain or food web whose diets rely directly on green plants or producers within the ecosystem.
Organisms that are not green plants and that do not feed directly on green plants would be secondary, tertiary, or quarternary consumers.
Thus, the organism among the listed options that is not a primary consumer would be the one whose diet does not directly depend on producers.
More on primary consumers can be found here: https://brainly.com/question/13420317
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