Answer: D) The box of ornaments in the attic that my grandmother gave me are as priceless as they are beautiful.
Step-by-step explanation: A subject-verb agreement error occurs when we use a singular subject with a plural verb, or a plural subject with a singular verb. The first sentence is correct because the subject is "The weatherman" (singular) and the verb is "doesn't predict" (singular) In the second sentence the subject is "the hockey players" (plural) and the verbs are "were" caught and "were benched" (plural). In the third sentence the subject is "The songs" (plural) and the verb is "are going to be" (plural). And finally the error is in the last sentence where the subject is "The box of ornaments" (singular) and the verb is "are" (plural), it should be: "The box of ornaments in the attic that my grandmother gave me is as priceless as it is beautiful."