D) The discovery that the Universe is expanding was the greatest discovery of the century.
According to the article "Lifeboat Ethics," the idea that one person taking more than his or her fair share of something can ruin the system for everyone is called THE TRAGEDY OF THE COMMONS.
It is brought about when the right to use a common resource is not matched by the corresponding responsibility to protect said resource.
Answer: Central ideas reflect the adventure, emotions, conflicts, and experiences of a story's main character. Make central ideas are supportable.
Explanation:
Well all of them are possible reasons although the most common reason for a diary is C.) Diaries allow writers to tell stories about what they have done
