I'd go with B - Article. There are hundreds of good examples for the answer being B. For example, "a book" ('a' is an article - 'book' is a noun), "an apple" ('an' article - 'book' noun). Those are just the simple ones.
The answer to this question is A
I think the third one since mothers doesn't originally have mothers(an extra s).
Answer:
Her speech evoked a hostile response.
X= 1/34z+280/17
Z=-560+34x
