Select the most appropriate option that can substitute the highlighted segment in the given sentence.
He looked at me happily when I interrupted him.

Correct option is B

The correct answer is (b) angrily.
· The sentence originally implies that he was happy when interrupted, which doesn't make logical sense in most contexts.
· Interruptions are usually unwelcome and would likely cause someone to look angry.
Therefore, "angrily" is the most suitable replacement for "happily" in this context.