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.
Love is the answer you are looking for. Orsino is in love with Olivia. Olivia is in love with Cesario. Viola is in love with Orsino. Therefore your answer is Love.
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