Which of the following is true of investigations of communist activity in the United States during the late 1940s and early 1950s?Multiple ChoiceTruman helped push through a registration act for all communist organizations.The federal government executed fifteen government employees as a result of its investigation.Even as they investigated communist organizations, Congress sought to improve legal protections for them.The Truman administration investigated federal employees and dismissed more than 200 of them.There was no federal investigation of communist activity outside of Congress.

The correct answer is: The Truman administration investigated federal employees and dismissed more than 200 of them.

Here's why:

1. Truman helped push through a registration act for all communist organizations: This is not true. The Internal Security Act of 1950, also known as the Subversive Activities Control Act of 1950 or the McCarran Act, was passed over President Truman's veto.

2. The federal government executed fifteen government employees as a result of its investigation: This is not true. While there were high-profile cases like Julius and Ethel Rosenberg who were executed for espionage, they were not government employees.

3. Even as they investigated communist organizations, Congress sought to improve legal protections for them: This is not true. During this time, Congress was more focused on investigating and rooting out suspected communist sympathizers, not improving their legal protections.

4. The Truman administration investigated federal employees and dismissed more than 200 of them: This is true. Truman issued Executive Order 9835, also known as the Loyalty Order, in 1947. This established the first general loyalty program in the United States, designed to root out communist influence in the U.S. federal government. More than 2000 government employees resigned under scrutiny and some 300 were dismissed from their positions.

5. There was no federal investigation of communist activity outside of Congress: This is not true. The FBI and other federal agencies were also involved in investigating suspected communist activities.