Joseph McCarthy gained public attention by claiming to have a list of communists in the government. The last option is correct.
McCarthy was very known for accusing people of being communists in the army or the administration without any reliable evidence. His witch hunt began in 1950 in Wheeling (West Virginia) when he delivered a speeh called "enemies from within."
McCarthy was an American politician who served as a Republican U.S. Senator from the state of Wisconsin from 1947 until his death in 1957.
Alfred the Great freed England from Spanish rule. Reformed English law by establishing the first monarchy, drove out invaders and united England around a single leader. He also encouraged tolerance for foreigners and religions other than Christianity.