
Alex J. answered 08/16/22
B.A. in Christian Studies with and Emphasis in Philosophy
The question asks, "Which of the following..." but I do not see any options from which to choose. The Oxford Dictionary of Philosophy (Blackburn, 2005) defines virtue as, "a trait of characteristic that is to be admired: one rendering its possessor better, either morally, or intellectually, or in the conduct of specific affairs" (p. 383).
With that said, there is much philosophical debate concerning they way in which someone would determine something to be virtuous; it would depend upon what sort of epistemology one holds (e.g. Objectivism vs. Subjectivism). This starts to delve into the subject of truth and whether or not one can know truth. Hope this begins to help.