Answer: A. the movie you wanted to watch is here (movie is underlined).
Step-by-step explanation: The subject of a sentence is the part of the phrase that performs the action, or also it can be the part of the phrase to which the verb is referring. In the given sentences, the second one has "home" underlined, which is a noun that has the function of an object in the sentence, in the third option, "bring" is the verb, and in the last one "here" is an adverb. In the option A (which is the correct one) we have a sentence with two verbs, but the main clause is "The movie is here" so the subject of the sentence is movie.