The correct answer is option A, Joseph McCarthy.
Established in 1938, the House Un-American Activities Committee was a committee of the House of Representatives in the United States. This committee examined both the Nazi's and Communist actions in the United States. This act of the commission appeared in numerous contempt-of-congress, blames, and blacklisting of many citizens who denied to answer the questions of the committee. Through this time Senator McCarthy launched a campaign toward alleged communist in the government of the United States and in other organizations.