@SierraSilversmith414 This just clicked. Thank you so much!!!!

@charlenehansen I thought that only if conditionals could be diagrammed like A <-> B. I interpreted Answer A to mean major changes <-> complex reasoning. I'm struggling to understand how the complex reasoning is the NC in Answer A and not in Answer D.

Hey! I'm in Miami but would love to be your online study bud... LMK if you're interested :)