How did joseph mccarthy and the house un-american activities committee produce a red scare?

a) the successfully used existing public fears of communism based on earlier investigations to create a perceived elevated threat of the political movement.

b) the intercepted a decoded soviet message to prove the influence of the communist in the us government.

c) they arrested and prosecuted thousands of radicals and anarchist to prevent labor unrest and attacks on government agencies.

d) they effectively campaigned to each media censorship and allow for broader inclusion in different political views