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.
<h2>Answer:</h2><h3><em><u>Just like adults, children by the age of 5 make rapid and consistent character judgements of others based on facial features, such as the tilt of the mouth or the distance between the eyes. Those facial features also shape how children behave toward others, according to research published by the American Psychological Association.</u></em></h3>