I need the entire sentence for context before I can answer the question. All of these options could be a subject, but you need to give context.
Answer:
His actions - He saved lives
Explanation:
Van Helsing is most importantly considered a hero, not only because he saved Mina's life, but because he was able to save Morris, Jonathan, and Arthur's lives with his knowledge. He kept them out of harm's way by providing them with a cross and garlic which he knows will keep vampires away.
Answer: “Everyone knows studying is important for a student’s success“
Explanation: I got it right on the test!
