its c, someone reported my answer and it got taken down last time

To prevent warping, thin, organic bonded wheels such as those used for cutting-off should be laid flat on a horizontal surface of steel or similar rigid material away from excessive heat and moisture.22 To minimise deterioration, wheels must be stored in a room which is dry and not subject to extreme temperatures.
D because these are good topics for a personal. I'll list them for you
Experience. The objective of the narrative essay is to teach you how to tell about your experiences in a literary manner. ...
Childhood. Childhood is a period of bright impressions and first experiences. ...
School years. ...
Relationships. ...
Morality. ...
Interests. ...
Traveling. ...
Student life.