Question

11.2 use the pronoun that agrees with the antecedent. p89
complete the sentence with the pronoun that agrees with the word or words in bold.
there are thousands of snail species. some of ______ are used throughout the world as a source of food.
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work it out
not feeling ready yet? these can help:
identify pronouns and their antecedents
replace the noun with a personal pronoun

Explanation:

The bolded antecedent "snail species" is a plural, non-gendered noun phrase. We need a plural object pronoun to agree with it, and "them" is the correct third-person plural object pronoun for this context.

Answer:

them