it clearly states to pick which is the best vehicle to use between the two

But we are made to choose one from the 2 and you need 2 people to operate the tank fully

Depends on the scenario... the scenario is perfectly clear, it's a zombie apocalypse and we all are just civilians... isnt it clear enough for you or do I have to explain it again

Yes, it is a vehicle. But do you really think that you know how to drive it and how can you get back to earth without any help, you need coordinates, weather information before landing

Weaponry... you know, it is possible to attach weapons on a monster truck, unlike the tank

a spaceship, really... is that you're going for. can you drive a spaceship

But can you operate it's turrents or cannons?... real answer is no...

Yeah... because of it's threads... catterpillar threads are good on most terrain but can it go on solid ice, and if you're good in inventing, you can just make special snow tires or better offroad tires

Yeah but are ships even part of this debate... I think not

A tank can't withstand the full power of a nuclear bomb or missile. heck, but it can withstand a missile but we aren't talking about a zombie that can use a gun, are we?