I'm not the teacher but i think i could somehow explain it to you you a little.
"Best way" that means there's only one way that would give you a total satisfaction. So when you " hit" a snooze alarm over and over gain, you had chopped up your sleep time unknowingly, and this affects the quality of your sleep. Let's say you have 1hr to sleep, then it's obvious that you would have a better sleep if you slept 1hr straight as to sleeping for 10' then wake up, hit the snooze alarm and back to sleep for another 10' then wake up, hit the snooze alarm again, then back to sleep and you did this repeatedly for 6 times which also added up to 1hr of sleep time.
Since the snooze alarm is designed to wake you up after a nap (a short sleep.) which never lets you go into a deep sleep, and a deep sleep is always much better than a nap. So hitting a snooze alarm over and over again to wake you up is not the best way to feel rested. It may still satisfy you somehow, but you might not feeling as good as you would after a straight sleep.
So it's not the best way to wake you up by hitting a snooze larm over and over again. People use snooze alarm because they want to sleep 5, 10 or even 20 more minutes. It's best that you think of a latest posible time which allows you not to be late for your work, then set the alarm up to that time so that you will have a straight sleep. That would give you a better quality sleep.