Name The Iconic '70s Sitcom From Just One Image

Whether you grew up watching them or caught a few reruns here and there, '70s sitcoms had an undeniable charm that drew Americans to TVs like moths to a flame. These iconic series set the foundation for the shows we binge-watch today, and their influence has even seeped into the very fabric of pop culture. You've no doubt heard of plenty of famous '70s sitcoms, but can you name these notable shows based on a single photo?

For a bit of magical fun, viewers tuned in to:

A spin-off of Happy Days, this show became the most-watched American TV program by its 3rd season:

Which sitcom featured a group of slacker students known as "Sweathogs"?

This 1972 spin-off featured Bea Arthur as an outspoken, politically liberal woman: