It can make your paper more appealing to readers, and/or more informative for the readers as well.
Answer:
A friend is someone other than your family or partner that you share close affection with. You share kindness, sympathy, empathy, compassion, loyalty, fun, and probably some common beliefs and values with them. They can be in person or online, your next door neighbor or 1,000 miles away. There are different degrees of friendship.
It would be it is a primary subject in the story that helps understand the hidden motives of the main character.
Cause and effect would be the correct answer because it's showing u the subject or in this case the cause and the effect would be what the cause does so if it's a tornado then the effect would be that it destroys
I think its called yokogaki