President Nixon resigned from presidency because he "Lost the support of the American people".
Answer: Option B
Step-by-step explanation:
The U.S' 37th president, who served from the period of 1969 - 1974 was popular as "Richard Milhous Nixon". During his administration conclusion was drawn to the United States participation in War of Vietnam and Environmental Protection Agency was established.
He became the very First and only President of United Sates history to resign from the post on August 9, 1974 after late 1973 Watergate scandal, after which he lost the American people support.
The scandal was highlighted from 17th June 1972, after burglary by five men in headquarters of DNC (Democratic National Committee) located at the Watergate Office Building, Washington D.C. while Nixon administration was continuously covering its participation in the crime.