Well, none of these poll options really agree with me. Personally, I think you can ask for consent without going "do you want to do this?". For instance, you can suggest doing something and see how that person responds; they could say "not now" or they could be into it and respond earnestly. That, for me, counts as a consent. And consent can be taken back at any time, and there should always be a way for all involved parties to retract their consent at any time (eg safewords, safe gestures like snapping your fingers, etc).