let me explain
In number 1 the question say "What does the picture depict or portray" it means you describe the picture what do you see the finger doing to those people
In number 2 what do you learn about the messages of the picture just think what do you learn in the picture ist good to do or no and what message did the picture say
in 3 the question is asking you if you ever experienced that
in my opinion I think the picture portray is about bullying pushing other people hurting them people judge them people push them away