Can anyone explain to me when to use a blocking or bridging NA, I always find myself getting easier NA questions wrong bc I'm zeroed in on the conclusion and if there is a bridge AC I assume its a Sufficient Assumption AC and it's therefore it's not necessarily true. Then in difficult questions I tend to zero into the conclusion and end up getting those right, but not all the time. I guess my hesitance on bridging is I don't want to mistakenly pick an SA AC but at the same time I know that sometimes the right answer to and NA question can be both a SA and NA. Can anyone tell me when it's okay to pick a bridging AC? and also how something can be sufficient and necessary at the same time? Thank you in advance!

Hey all, this is my first time posting on this forum because I have no idea where to go from here so any tips, strategies, hugs, cry sessions, heck I'll even pay for a reading comp tutor if I need to because I've worked too hard for reading comp to be my downfall :(. A little background, I noticed the later I got into the PTs (70s +) the worse I am doing on RC, I just took PT 88 and i got -4 on LR , -1on LG and -10 ON READING COMP. I feel like im looking waaaaay to deep into the questions and it's really making me doubt taking the June test since its literally in 15 days. So yeah that's my situation, please help ya girl :(((((((