Which part would light follow as travels through glass

well, i can't read it so i'll ask you questions about it : )

if you were a reader and you read the introduction, would you want to read more?

does it start with a question? if so, is it something you would want to read about?

and ask any friends or family for their opinion : )

answer; degradation ceremony;

answer; rational if melanie values sleep more highly than the benefits she expects to receive from attending the class;

answer; larger numbers of minority;