Answer:
The letter was calm and restrained.
Explanation:
Tension between the United States and Russia, formerly known as the Union of Soviet Socialists States were on the rise. From the rocket race, to the missiles race, the tensions between the two countries kept escalating. In the wake of the events, one of the potentially dangerous events was the Cuban missile crisis. Russia thought to build a missile base in Cuba. This would present a great danger to the US. In the letter, Kennedy is tentative in his approach. He exercises restraint. In fact, in one of the lines he says, "...I recognize Mr. Chairman, that it was not I who issued the first challenge in this case..." The president distances himself from the provocations that had been sent his his predecessors.
By explaining problems and giving solutions! this is the best fit because the other two might make sense at a first glance, but only explaining problems and solutions would be an effective way to teach people how to set up an aquarium by giving them examples of what to do and what not to do whereas the others are just him talking about his aquarium.
As one comes closer to the understanding of poetry, then one becomes more able too apply their understanding to their own spiritual being. Robert Frost was able to create his own beliefs based on his experience with studying and writing poetry.
