The answer is letter A. The original host of the 1960s Jeopardy! TV game show is Art Fleming. Jeopardy! Is an American game show created by Merv Griffin. It premiered on March 30, 1964 under NBC channel and ran until January 03, 1975. It was during these years that Art Fleming was hired to host the game show.
Even though it ended, Art Fleming still returned to host the game show again – renamed The All-New Jeopardy! – from October 1978 to March 1979. This marked his last time to appear as host of the game show because he reportedly declined to reprise his role when Merv Griffin brought the show back in 1984. Alex Trebek started hosting when the game show went on air again from 1984 up to the present.