The correct answer is A, amelioration. In linguistics pejoration is a term used to signify how a word's meaning becomes downgraded and goes from having a positive meaning to having a negative meaning. Amelioration is a reverse term, it is a phenomenon where one word over time acquires a more positive meaning, as is the case with prestige, which now has a positive connotation.
He should use a hands on, interactive approach where the audience gets to try using the computer buttons and features. Your text will have a word that means hands on or interactive.
The best answer is that a linear array helps someone organize synonyms or antonyms by letting him/her organize words according to nuance of meaning. Nuance of meaning by definition is a slight difference in meaning.
Hope my answer has come to your help.
