Answer :
The key idea that Roosevelt refined in the sentence is that he is again emphasizing Japan's deception and unprovoked attacks as reasons for the United States to go to war with Japan.
The USA president Franklin Roosevelt In the Address to the Congress Requesting a Declaration of War, written on December 8th of 1941, asks the congress to declare war on Japan and gives all the reasons and evidence.
The key idea
The key idea in the sentence is he is emphasizing Japan's deception and unprovoked attacks as reasons for war. We can see this when he says:
"the unprovoked and dastardly attack by Japan"
Meaning that the attacks were
- without a cause (unprovoked)
- Deceitful since they were wicked and unexpected (Japan's deceptions attacks)
In conclusion, the correct option is:
He is again emphasizing Japan's deception and unprovoked attacks as reasons for the United States to go to war with Japan.
Learn more about the Address to Congress Requesting a Declaration of War here:
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