1. Restrictions on one of the committees that monitor/monitors corporate waste disposal were revoked, allowing the committee to levy fines on violators of the disposal laws.
[. . . ] The answer picked is 'monitors', with an explanation that we can delete the preposition phrase 'of the committees' and we'll have 'one' as the subject of the sentence.
I do not agree with the answer. I think it's all 'the committees' monitor, not just one.
Hi, Yale Wale,
I agree with you that "monitor" is the correct answer. However, this does not necessarily mean that I am in disagreement with the book. I would need to see the exercise in the book to make sure you have represented it accurately here.
In any case, even if the relative clause modified "one," which it doesn't, that would not mean that "one" was the subject of the sentence. The (simple) subject of the sentence is "restrictions." The subject of the relative clause is "that."
"That" (the pronominal subject of the relative clause) is co-referent with "committees" (plural). Hence the verb needs to have plural agreement: "monitor," not "monitors."
The relative clause is within the "of"-phrase. Therefore it is incorrect to suppose that the "of"-phrase should be disregarded. The sentence refers to committees that monitor something. Restrictions on one of those committees were revoked.