Senator joseph mccarthy created the media frenzy that began his anti-communist witch hunt by

d. saying that he had a list of Communists employed by the State Department.

Explanation:

Senator Joseph Raymond McCarthy was a republican state Senator from Wisconsin. He brought about the term "McCarthyism" through his act of instigating a wrongful accusation that the communists had infiltrated the whole system of the United States. By alleging that numerous Communist and Soviet spies had infiltrated the nation in all spheres of life, be it the federal as well as the schools and everyday living of the country, he brought about the practice of witch hunt for any Communist or Soviet "spies". This act led to the torture of many people, regardless of whether they are Communists or not. This media frenzy led to the censure of McCarthy over the wrong accusation. He even admitted to having the list of "Communists" that were employed by the State Department, leading to a vast uproar in the government.

fairly positive it is 4