The 20 year old answer is not available at the Jeopardy Archive for season 7 of the show she related link for the dates available. on March 29 1991 the category was Women in History Clue Her 1st husband, Alexandre de Beauharnais, fought in both the American & French Revolutions answer Empress Josephine
It varies with the year in 2010 on April 29 The final Jeopardy Category was Poets on Poets
Jeopardy - 1984 7-171 was released on: USA: 29 April 1991
The Final Jeopardy category for June 29 2010 was Physics
The Final Jeopardy category for July 29 2010 was Super Bowl
The final category is American Artists The clue was: In 1909 he completed his last painting, a canvas called "Driftwood" The answer was: Who was Winslow Homer
Jeopardy - 1984 8-29 was released on: USA: 10 October 1991
Pro SportsThe Final Category for January 29 2010 was Pro Sports
Jeopardy - 1984 29-160 SUSPENDED was released on: USA: 26 April 2013
The final category is The Civil War and the answer is Austin and Tallahassee
The category was 'Capital Cities'.
The Final Jeopardy category for September 17 2010 was Rivers
Jeopardy - 1984 8-42 was released on: USA: 29 October 1991