This one really messed with me since the last question we went over, the correct answer was denying an alternative hypothesis. I got it wrong the first time, but right in the blind review, but don't make the same mistake that I made in trying to look for an answer that denies an alternative hypothesis. I saw someone comment this a few lessons back, but I always find myself getting the hard questions right, but overthinking on the easy ones lol.

Is saying "inclusive or" the same thing as saying "and or"?

For question #2, why is the first group not "planetary societies will be endangered" and the second group "by impacts from space"? Endangered is referring to planetary societies, not space. So why would we group "endangered" with impacts from space?