Answer imagery
Imagery refers to the way language can be used go represent objects, actions, or ideas
A letter of the alphabet that’s different from the others, in form of height and how it looks. (If that’s what you meant)
The option that most effectively completes the sentence is “allowing world nations freedom of choice, within reason, promotes peace”. According to John Kennedy in his speech delivered at the American University, nations (in this case he refers to the Soviet Union) should not try to impose rules on other nations as this interferes with the process of peace and creates tension.
