Which organism is a primary consumer in this ecosystem?
a - caterpillar
b - weasel
c - grass
d - fox
(apex)

The organism that is a primary consumer in this question is A - Caterpillar

A. Caterpillar is a primary consumer

Explanation:

Caterpillar is a primary consumer because they feed on a primary producer, in this case grass. The consumers eat producers, primary consumers eat primary  producers, on land they are plant eaters, they are herbivores, in this ecosystem for example caterpillar, rabbits, squirrel and mouse.

Weasel and Fox are secondary consumer, they eat primary consumers.

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explanation:

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