The correct answer is B. Predicate
Explanation:
In English and other languages, sentences are composed by two main elements, these are the subject which is the agent that carries out the main action and the predicate which is the verb and any other information that defines the action such as the complement of the sentence. Considering a sentence is a group of words that express complete thought or idea and that should be composed by at least a subject and a predicate both elements are required in a complete and correct sentence. In the case of "The Inventor of the modern car", this phrase expresses a subject or agent which is the person that invented the modern car but does not have action and complement to make it a complete thought. Thus, the element that this sentence is missing is B. Predicate as a this only has a subject but is missing the main verb or action and probably a sentence complement which is what a predicate is and that is necessary to have a complete and correct sentence.
