An objective opinion because it is his opinion and he has a goal- to bring lunch but biases is to agree with something no matter whether it's correct or not
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.
D) cell phones should not be allowed in the classroom.
