Sanjay’s point of view was correct but his behaviour with his father was quite impertinent.

The correct answer is D. respectful.

Sanjay’s point of view was correct, but his behavior with his father was quite impertinent. This means that Sanjay was right about what he said, but he did not say it in a respectful way. He was rude and disrespectful to his father, which is not acceptable.

Option A, impressive, is not the correct answer because Sanjay’s behavior was not impressive. It was rude and disrespectful.

Option B, smooth, is not the correct answer because Sanjay’s behavior was not smooth. It was rude and disrespectful.

Option C, healthy, is not the correct answer because Sanjay’s behavior was not healthy. It was rude and disrespectful.