I immediately vote for the last option: Um, this is NOT the last option.
I vote for the shortest answer, because it's easier to read, which pleases me very much: Well then go find the shortest option and vote for it. (This option is the longest.)
I either vote for the first or for the last option: Ok, is that why you voted for option 6 of 8?
I immediately vote for the first option: Yeah, this is the last option. Enough said.