Question

complete the sentence with the pronoun that agrees with the word or words in bold. before food can be turned into fuel, square must pass through the digestive system and be broken down into nutrients that the body can absorb.

Explanation:

The bolded noun "food" is an uncountable singular noun, so it requires a third-person singular pronoun. The pronoun functions as the subject of the second clause, so the subjective form "it" is correct.

Answer:

it