Raise the driving age to 18!

after reading mr. j. brown's letter, dated august 15, i feel compelled to write and let your readers know how i feel about raising the driving age from 16 to 18. teenagers should not be allowed to drive until they are 18. only high school graduates should be given a driver's license, and only after successfully completing a driver's education class during their senior year of high school.

right now, 15-year-olds can get a practice permit and try for their license at 16. this is too young. eighteen is a better age. at 18, people are more mature and better able to make mature decisions. not all 18-year-olds are mature, but the majority of them are. at least we are more mature than 15-year-olds.
which sentence provides the best supporting point to defend the author's position?
a) teenagers should not be allowed to drive until they are 18.
b) only high school graduates should be given a driver's license.
c) some younger teenagers are perfectly mature and responsible, of course.
d) at 18, people are more mature and better able to make mature decisions.

the speech this question is referring to is president kennedy's special message to the congress on urgent national needs, may 25, 1961

kennedy responds in a very direct and concrete way to those thinking that communism is a positive system:

"yet their aggression is more often concealed than open. they have fired no missiles; and their troops are seldom seen. they send arms, agitators, aid, technicians and propaganda to every troubled area. but where fighting is required, it is usually done by others--by guerrillas striking at night, by assassins striking alone--assassins who have taken the lives of four thousand civil officers in the last twelve months in vietnam alone--by subversives and saboteurs and insurrectionists, who in some cases control whole areas inside of independent nations." (kennedy)

president kennedy presents communism as cowardly, as a hidden and treacherous weapon that strikes from the shadows like thieves, he represents the system as not even being capable of showing and open and overt attack or confrontation. to finish up the response, he expresses that the system attacks even a country's idependence and freedom.