Although most writers avoid disagreement between subject and predicate in most cases, a few words provide some particular trouble. One such word is committee. Committee is a singular noun describing a collection of individuals. Writers who improperly use committee tend to focus on those individual members.
But the committee is a collection, and that collection is one. Therefore, the committee is one. And as a singular noun, committee takes a singular verb.
Consider the example sentence in the cropped graphic above. The writer has paired the singular noun committee with the plural noun are, thus creating a disagreement between subject and predicate. More effective writers will revise this sentence to provide agreement.