The correct answer here is D.
Prior to attack on Pearl Harbor which occurred, as the quote states, on <span>December 7th, 1941, the United States were officially a neutral party not involved in the War between the Allies and the Axis. The attack was unprovoked and resulted in the massive loss of life. That is why, because there was no imminent reason to attack the US, that that day will live in infamy.</span>
The answer is E
A, B, and D are singular instead of plural.
C is repeating the same words from the beginning of the statement which creates unneccessary repetitiveness.
Short term retirement usually involves being retired for a period of 3 to 5 years. Other options have little to do with retirement at all.
Answer: Friday is a noun.