IT’S UNCLEAR WHAT THE PHRASE WHICH IS MADEWHICH REFERS TO THREE OR MORE

10. b.It’s unclear what the phrase which is madewhich refers to three or more. Choice bfrom recycled plastic bottlesmodifies—repeats the error. Choices dand euse thewrong verb forms. The context, which referscarpeting, a singular noun, or fibers, a pluralnoun. Choice cis also confusing; does theyto an event in the past, and the rest of the sen-tence indicate that the simple past tense isrefer to carpeting or fibers? Choice dchangesrequired.the verb form to correctly match the plural