During the 1920s the red scare the trial of Sacco and Vanzetti and the rise of nativism were all sign of "paranoia" and "anti-radicalism," since these had to do with finding and persecuting communists.
The correct answer is Upton Sinclair.
This American author became a national name with his book "The Jungle." This fiction novel was based on the real working experiences of individuals within the meat packing industry during the early 20th century. The disgusting habits/practices of this industry and the terrible working conditions described gained national attention, eventually leading to president Teddy Roosevelt passing the Meat Inspection Act of 1907.
Inexperienced, mature, imitated and/or sophisticated
Congress was split, as the French had helped the young United States during the Revolutionary War, however, many where confused what direction the revolution was going (spoiler alert, the French Revolution traded a monarchy for a dictatorship with Napoleon at the helm - so it didin't accomplish a whole lot).
Although both parties(the Democratic-Republicans and Federalists) had different hopes for the french revolution, they both agreed that war would be economically not possible and would possibly open the U.S up to attack, so the U.S remained neutral.