can somone explain this concept to answer this

help me prepare

dude my scores finally increased IM SO HAPPY it isn't too bad and I COULD do better but I'm still proud of myself :D

Hella nervous gang I wanted to solve a practice test but it is too late and I should fall asleep rn I'll prob watch some of @John Hoegerl vids to calm down Regardless I know that despite procrastinating, I was able to to increase my score and started solving harder modules Good news is I'll be able to wake up at 5am (exam starts at 8am) to refresh myself. Does anyone have any other tips aside from waking up at 5 to watch John's vids?