I think number 2 is the correct answer you have to try to replace darkness with one of the answer choices
So basically all you need to remember is that “Mood= the way the passage makes ME(the reader) feel” and tone is like the authors version of that
D. Discrimination and injustice cannot exist where the rights of the individual come first.
It was very helpful of the students to move the shelves for their teacher.
Being wise comes with age.
The dog was loyal to its owner since day one.
He’s the sort of man who’s always punctual.
The young boy was very stingy, so stingy that he would not even share his toys with his younger sister.
It was troublesome of the woman to climb the gate illegally.
The girl was honest when she explained why she had stolen from her mother.
The current scores were dominating compared last year’s.
The therapist nodded in understanding.
It was wasteful of the man to throw his half-eaten hotdog away.