What inference can be made about Montague from this dialogue? He is very concerned about Romeo. He is annoyed with Romeo's bad mood. He is unaware that Romeo is having troubles. He is the reason Romeo is in such despair.

The inference that can be made about Montague from this dialogue is that he is very concerned about Romeo.

Obviously, he loves his son, and he notices that something is wrong about his behavior. He stops leaving his room, it is always very dark there, Romeo doesn't eat or sleep anymore, and his father is starting to become very worried about what is happening to his boy.