The answer should be A. Internal conflict is a struggle within a character’s self, including his or her thoughts and choices; external conflict is a struggle between the character and an outside force, like nature or another human.
Honestly, I doubt a teacher can even give an actual grade for these because these are extremely debatable to people and are more useful just for psychiatric testing.
If you feel that your answer works, you can always right next to it and explain your reasoning!
"Let every nation know, whether it wishes us well or ill, that we shall pay any price, bear any burden, meet any hardship, support any friend, oppose any foe to assure the survival and the success of liberty." (A) contains a hyperbole.
In literature, a hyperbole is a stylistic exaggeration. It is used to give a dramatic effect to a statement.
Here, the hyperbole is: "pay any price, bear any burden, meet any hardship, support any friend, oppose any foe." There are of course prices that the U.S. are going to refuse to pay, burdens they will not afford to carry, etc., but by exaggerating these commitments, Kennedy sounds more resolute and more persuasive.