What is Kennedy's purpose when he speaks these lines: Now the trumpet summons us again—not as a call to bear arms, though arms we need—not as a call to battle, though embattled we are—but a call to bear the burden of a long twilight struggle, year in and year out, "rejoicing in hope, patient in tribulation"—a struggle against the common enemies of man: tyranny, poverty, disease and war itself. *
A. His purpose his to make the audience afraid of their enemy
B. His purpose is to make the audience encouraged that times will get better
C.His purpose is to make the audience feel sorry for themselves
or
D. His purpose is to make the audience excited to make a difference.