Note that a lot of this is going to be processed by computer. That means you should give simple, machine readable answers. If the question is "what city do you live in?", a simple, machine-readable answer is "Los Angeles", which easily aggregates into the same bin as everyone else who answered "Los Angeles". Bad answers would include "I live in Los Angeles", "Los Angeles, CA", "Just north of Los Angeles", "Los Angeles but sometimes in Dallas for work", et cetera.
Please don't include % signs, even when you're giving percentages. For example, "99", not "99%"