I believe the tone is kind of sad. The mood the author wanted to make was sadness. He wanted you to image him when he was younger. (i hope this helped)
The answer is c. to your question
<span>At the State of the Union Address in 1941, John F. Kennedy singles out Europe, Asia, Africa and Australasia that United States of America will defend against any attacker. He mentioned that the total of the whole population and resources for all the countries is greater than the whole of the Western Hemisphere. </span>
