read the passage.

many ethnic groups lived in arctic regions. the inuit lived near the atlantic ocean in greenland, and the saami lived in the arctic regions of norway. in north america, three main ethnic groups lived in the arctic region: aleuts, native americans, and inuits. the aleuts inhabited the area around the bering sea, while native americans occupied the grasslands.

which best expresses the main idea?

a.
inuits, saami, aleuts, and native americans represent different ethnic groups.

b.
arctic regions were inhabited by many different groups of people.

c.
greenland, norway, and north america all have arctic regions.

d.
people can live in arctic regions.

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.

it is an infinitive phrase with a subject.