Please help. I’ll mark you as brainliest if correct!!!
The sentence that expresses the main idea is
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3
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6

a

explanation:

its d! the final exam asked good luck

the development of trade during the middle age increased to the change given in the agriculture, which gave money, industry and markets a bigger importance in economy. the agriculture production was more than the consumption, which meant the creation of wider markets out of the areas. besides, with the end of multiple wars, the population increased and new trade routes were created.

answer: producers

explanation:

they are producers because the use photosynthesis to collect sunlight and make food for themselves which when a animal comes around and eats it it becomes a food chain