Richard Nixon led the investigation that resulted in Alger Hiss being convicted of perjury.
Richard Milhous Nixon was the 37th President of the United States, serving from 1969 to 1974 when he became the only U.S. president to resign the office.
The correct answer between all the choices given is the third choice. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.