User blog comment:LondonDauntlessCorvair963/The Logic Test/@comment-4052371-20130406135556

1 : What the heck is a PPK?

2 : A, for obvious reasons.

3 : B, herbivores can't eat you.

4 : A, because blood can send sharks into a feeding frenzy, and you never want to be in the water when that happens.

5 : A, because if you're dealing with a big fire, it can deplete a lot of oxygen from the air (as well as release smoke and carbon monoxide, which you obviously don't want to breathe).