I think it is the last sentence but I might be wrong
Answer:
oh,that isnt english course,is it??
The answer is C - exists in thought or as an idea, but does not have a physical existence.
Answer:
the purpose of a single phrase is, A signal phrase is a short introduction phrase that indicates that a quote or paraphrase is coming. By introducing a quotation or paraphrase with a signal phrase, you provide an effective transition between your own ideas and the evidence used to explore your ideas.
The subject in a sentence is the person, animal or object that performs the main or direct action. The action is the verb of the sentence. In this case, Dad is the subject of the sentence because he is the one who is performing the main action or verb. In the sentence the verb is invited, because it is the action that Dad is performing.