...work at McDonalds as the french fry operator until you retire? Saying yes to this question means you'd sign a contract that would pay you 50k a year every year until you retire. Every day of your worklife would then involve wearing a McDonals uniform
...wear the same clothes you're wearing now at all times for an entire year? You can only wear this outfit (the one you have on now), whether it's going to work/school, to weddings, to parties, sitting around the house, etc. You can't tell anyone about the money otherwise the deal's off. Just 365 days, and you are allowed to wash the outfit as much as you want
...go to prison for 4 months? It's normal, gritty prison, not one of those white-collar prisons. You'll be locked in with some of the worst felons, like murderers and those guilty of assault and battery
...get back together with your ex? You must be with him/her for at least 2 months and you can't mention the money. If they break up with you before then, you don't get paid, so it'd be in your best interests to be very supportive of whatever they want to do in those 60 days
..be willing to become addicted to heroin? You can always rehab it out later, but that junkie temptation for another fix will always stay with you
...be a surrogate mother of triplets? This question is obviously for the ladies. They've developed a technique that would allow them to guarrantee how many babies end up in the womb, and the parents who are footing the bill want triplets. Carrying them to term will be guarranteed, due to the hypothetical advancements of science in this poll. It's just the 9 months of discomfort, weight gain and any other awkwardness that comes with carrying 3 fetuses inside you for 3 seasons
Edit: in question 1, there is no room for promotion, so you'll always remain the french fry person