Answer:
Kennedy appeals to the audience's curiosity with his claim that the exploration of space is an adventure. Kennedy appeals to the audience's competitive spirit with his claim that the exploration of space will go on with or without the United States.
You can join the sentence in this way:
<em>Disappointed by not being able to picnic by the river, they went home sadly.</em>
B a speech cant get communicate and 7th grader is out of the question c is also out i would say B letter written by solider from the civil war