a) The story had a single protagonist (or narrator) through whom everyone else's interactions were observed
b) The story had multiple but defined protagonists (or narrators) between whom your viewpoint switched
c) The story had no defined protagonist (or narrator) but was told as though uninflectedly observed from outside the group?
& regarding protagonists/narrators, which would interest (or annoy) you most - first person, second person, third person, past tense, present tense, future tense?
I've read books/stories of all these kinds in the last year and I'm delighted by all of them, so I'm the wrong person to answer this question for myself, I am pretty sure there are some people who get annoyed by books telling them what they did, and/or by present-tense narrative. :)