"This is the second activity in the repetition strategy" indicates that the word revisit would be the best word to use to sum up the idea since repetition strategy definitely suggests revisiting. Something which is repeated is done over again so in the act of re-doing it it means it is also re-visited.
He tells us that the mind can make its own hell out of heaven
Sibling rivalry is the jealousy, competition and fighting between siblings.
Answer:
Tragedy is a genre of story in which a hero is brought down by his/her own flaws, usually by ordinary human flaws – flaws like greed, over-ambition, or even an excess of love, honor, or loyalty. The hero is successful, respected, and happy. But he has some tragic flaw that will ultimately cause his downfall. Tragedy is something unexpected that happens, and in the end something bad happens to a character that shocks, and saddens us.
This is different than some stories that are just sad, because a tragedy is something bad unexpected. Meanwhile something sad happens because of how the plot is happening. This means you can tell it is angst and was going to happen either way.
Explanation: