Voice in literary nonfiction refers to?

Based on your knowledge of word parts what does the word intervene mean

Which of the narrator's statements in "the yellow wallpaper" suggests that she does not think women are too frail to be intellectual? a.i verily believe she thinks it is the writing which made me sick! b.of course i didn't do a thing. jennie sees to everything now. c. i don't feel as if it was worth while to turn my hand over for anything, and i'm getting dreadfully fretful and querulous. d. so i walk a little in the garden or down that lovely lane, sit on the porch under the roses, and lie down up here a good deal.

Which statement best explains the function of the subtitlein this text? a.it provides additional information that narrows the focusof the text.b.it draws attention to important information in the table ofcontents.c.it introduces the various sections that appear withineach chapter.d.it explains the author's primary reason for writing aboutthis topic.correct (a)