The sentence 'One of the plates are broken' has a subject-verb agreement error. The subject 'one' is singular, hence the correct sentence should be 'One of the plates is broken.'
Step-by-step explanation:
When analyzing the sentence "One of the plates are broken", we need to check for subject-verb agreement. The subject of the sentence is "one", which is singular, and therefore the verb should also be singular. The correct form of the sentence should be "One of the plates is broken."
It is important to identify the true subject in a sentence to ensure proper agreement with the verb. Here, the phrase "one of the plates" can be misleading because "plates" is plural, but "one" is the actual subject and it requires the singular verb "is" instead of "are".