Question

1. which sentence below contains correct capitalization and end - mark mechanics?

napoleon bonapartes defeat at the battle of waterloo marked the end of his rule in europe!
the gettysburg address was delivered in pennsylvania during a key moment in the civil war?
the treaty of versailles was signed in france to end world war i.
president franklin d. roosevelt declared, \december 7th, 1941, is a date which will live in infamy,\ after the attack on pearl harbor

Explanation:

1. In "Napoleon Bonaparte's defeat at the battle of waterloo marked the end of his rule in Europe!", "waterloo" should be capitalized as it is a proper - noun (the name of a place).
2. In "The gettysburg address was delivered in Pennsylvania during a key moment in the Civil War?", "gettysburg address" should be capitalized as it is a proper - noun phrase, and the end - mark should be a period instead of a question mark since it is a declarative sentence.
3. "The Treaty of Versailles was signed in France to end World War I." has correct capitalization and end - mark (a period for a declarative sentence).
4. In "President Franklin D. Roosevelt declared, 'december 7th, 1941, is a date which will live in infamy,' after the attack on Pearl harbor", "december" should be capitalized as it is a month name.

Answer:

C. The Treaty of Versailles was signed in France to end World War I.