The correct answer is C) Chief Justice.
The role in which John Marshall served was Chief Justice.
John Marshall (1755-1835) was the fourth Chief Justice of the United States. He is considered one of the founders of the United States Constitutional law, and one of the most important figures of the time that was very influential as Chief of Justice of the Supre Court. He supported the principles of American Federalism and procured for solid judicial power in the country.
