I believe the answer is going to be A but without the underlined phrase I am not 100% sure.
Answer:
It has to be from Act 5. That's because in Act 5 Macbeth thinks he is invincible. It happens to be during scene 7, before the last scene.
Explanation:
No one really knows, all I know is I’m going to make the best of it while I’m here, it’s all we got.
