"Answer choices will often declare those hypotheses to be either true or false." Can we see an example of this? I'm confused on how we will know if an alternate hypothesis is true or not.

#help

Can anyone explain why answer choice D is a sufficiency-necessity mistake? I'm a bit confused #help

I'm stuck on understanding the breakdown for question 18. I guess I am still having a hard time differentiating the necessary from sufficient when the sentences are more complex.

#help

What makes answer choice C correct? #help