c) Mary Kay and Johnny

Mary Kay and Johnny, which first aired in 1947, holds the title of the first American TV sitcom. This pioneering show introduced the format of a situational comedy centered around a domestic setting, featuring a married couple living in New York City. Although less well-known than later sitcoms, Mary Kay and Johnny laid the groundwork for this popular television format, influencing the development of countless sitcoms that followed and becoming a significant part of TV history.