Answer:
extraneous - irrelevant or unrelated to the subject being dealt with
The correct answer is C. He ranks his virtues in that way because he believes that acquiring certain virtues will make it easier to master others. In the Autobiography, Benjamin Franklin showed his focus on self-improvement and how he was constantly aiming to a "Moral Perfection". He kept track of his progress towards a virtuous life using a chart with 13 virtues.
