I see the partial credit option for quiz questions. I'm guessing it goes something like this: check two correct answers when setting up and therefore students would need to select both answers to get full credit. Is it possible to have weighted answers? i.e.
Answer A = 100%
Answer B = 75% (is wrong but close)
Answer C = 50%
Answer D = 0%
If not, I'll submit to feature request section. Although I didn't use it a lot, it was a feature in Moodle I really liked when I did use it :-/