What is the purpose of the preamble to the constitution ?

I think the answer is the first choice. "establish justice ensure domestic tranquility" is an example of this

they gained popular support by speaking out against communists

in the united states. ( d.)

- "schenck v. united states, case in which the u.s. supreme court ruled on march 3, 1919, that the freedom of speech protection afforded in the u.s. constitution's first amendment could be restricted if the words spoken or printed represented to society a “clear and present danger.” "

- speech aimed to potentially create danger could be banned.

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