Which of these best describes the function of an auxiliary verb? It is used to help form certain principle parts or tenses.
It is a word used to label an action only.
It is also called a helping verb.

How does thoreau defend his approach in the second paragraph of "economy" inwalden? -he uses the word "t" because he feels it sounds more interesting-he does not use first-person point of view because his is a fictional account-he uses first-person point of view to get his readers' attention-he uses the word "t" for the sake of sincerity and honesty.