Hi there!
The answer would be D. shriek.
Answer choices A, B, and C are all vague, fainter adjectives or verbs, while "shriek" expresses a dangerous, sharp horror tone.
Hope this helps！
Answer:
A. It makes it clear that Twain recognizes the value of what Bixby taught him.
Explanation:
It is obvious that Twain recognizes the lesson from Bixby, when he says, "It was a good enough lesson, but learned the hard way." This means he obviously learned his lesson.
