Based on the question above, the best answer for this question would be:
C. Indignant
In the excerpt, it is shown that the character has a feeling of bitterness in himself and through his friend, because he thought he knew him wholly; which led his anger and frustration of the thought that his friend was not really what he would expect.
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Answer:
your answer is right ,you don't need to bother yourself .... goodluck ,be confident in your answer because you didn't choose that for nothing your thinking for that ,that's why you choose to answer that