For the following food chain, identify the required components

Okay, so im studying for a Science test and on the review there is a question that says :

For the following food chain, identify the required components.

Buttercups --> caterpillar --> sparrow --> cat --> fox

a. herbivore ______________________…
b. top carnivore __________________________
c. primary consumer __________________________
d. organism at 3rd trophic level __________________________

I don't understand. Can anyone help?

a. You can answer that one on your own.

b. The diagram has the answer. Look for the carnivore at the top of the chain.

c. Primary consumers are strictly herbivores. In other words, it should be the same answer as "a."

d. This is tricky. If we go by the diagram, it's the organism that's at the third level in the chain (the sparrow). But technically speaking, third trophic level organisms are anything that prey on herbivores. Cats and foxes could qualify for third trophic level, depending on how we look at it.

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