The correct answer is Ethel and Julius Rosenberg.
Here is why the other answers are incorrect.
Joseph McCarthy was a US Senator focused on exposing communists in American society. His actions help sparked the House Un-American Activities Committee, which lead to innocent citizens being blacklisted by Congress.
Sacco and Vanzetti were two Italian immigrants convicted of murder. However, the lack of evidence caused citizens to believe that these individuals were wrongly convicted/executed due to their political belief in the system of anarchy.
Elizabeth Gurley was a woman's right activists and also helped in the development of labor unions during the World War I era.
USSR declared a blonde of Allied sectors and West Berlin in June 1948. The Berlin blockade cut West Berlin off from all supplies that came in
The Congress shall have Power ... To make all Laws which shall be necessary and proper for carrying into Execution the foregoing Powers, and all other Powers vested by this Constitution in the Government of the United States, or in any Department or Officer thereof.
b.) Denied powers
The Novikov claimed that if the United States wasn't able to completely avoid the participation in World War 2, it would enter the war at the last moment so that if they win the enemy will tire, and according to Novikov this was a suitable strategy with the United States for World Domination.