The process that the word <em>knight </em>has undergone is A) amelioration: change in meaning to something more favorable. The meaning of servant has changed to that of a noble knight, which is definitely better.
A.amelioration: change in meaning to something more favorable
Explanation:
If the original meaning was servant, we can easily see how the meaning became something more favorable. While servants have this image of being under others, Knights are nobles in armor that possessed lands for themselves. Even though nights might be servants of the king, the word has a different connotation.
