How do u study for a subject that you didn’t understand from the beginning of the year !!! (The subject is chem btw )

I would usually try my BEST to get help from yt videos. I recommend using yt that give the most kindergarten type speaking technique, this is really weird to say but it helps just incase you can be stressed out about the words being given by teachers in Chemistry. And I recommend writing down the notes when they explain as well. Hope this helps!

∠gdh and ∠edh on edg.

answer is c