<p>I got the questions from the internet (some pdf file of SAT grammar questions) and there was no answer key. My source isn’t a reliable benchmark for real SAT questions 
I was just curious if there was a “real” answer because like you guys, I was having a hard time deciphering the difference between some choices (the ;however vs. ;but and considering vs. in light of). Thanks for the detailed answer explanations by the way! :)</p>