Great idea Jokery aside too, lol, I think sites that provide "resources" put a much greater burden on the owner than, for instance, my political debate board. If I'm not there, the others still post with each other. I'm pretty sure my people aren't as anxiously waiting to see what my next new opinion is as the people here are in waiting to see what your next new images are going to be, haha.
It does both. You can have multiple verification questions and multiple answers per question. For example, if you have a question of "Buster is a dog. What is Buster?" you could add both "dog" and "a dog" as valid answer. To add multiple questions: ACP => Tools => Captcha Question and Answer => Add New Question To add multiple answers: ACP => Tools => Captcha Question and Answer => {select question} => Add Additional Answer