A. is science fiction and is a present element.
Well I would say do an event that is most signifigant to you. It could be a Tragic or Happy memory, or one that is simply close to your heart.
The answer is B.
"Grandma taught me to make cheesecake" is the only sentence that makes sense when it stands alone.
Simile or metaphor if it uses like or as it is a simile
Money leaders wanted compromise