Lesson 6 - Mild Winter Birds (S) is insanely helpful for understanding the mechanics of this question.

Anyone have any tips on who to answer these types of questions faster?

@Elideebeep thank you!!

Is a right way to think about this: valid arguments trigger the sufficient condition or negate the necessary condition?

For a question like this, if you know the answer straight away, is it a waste of time to read through all the answer choices?