In my opinion, a straw is a hole, so with that logic I could see 1 or 0 making sense.
But the thing, a straw, has two ends, both of which would be described as holes, so there's argument there as well.
What a delightfully funny question. I'd never considered it before.
i guess it depends a lot on ur definition ofhole, if u think hole=opening then 2 is more logical but if u rhink the hole is the emptiness (that can have more than 1 opening) then 1 is better
i'd say 2 bc i wouldnt call a tube a hole (even tho it technically is i guess lol) i just think it's a tube thats enpty inside