Which cartoon created in 1949 aired on NBC until 1955 and consisted of 195 episodes?

The cartoon created in 1949 that aired on NBC until 1955 and consists of 195 episodes is "Crusader Rabbit." This series is significant as it is widely recognized as one of the first serialized animated television shows, where characters engaged in episodic adventures. The show's innovative format and storytelling distinguished it from the more traditionally structured animated shorts of the time, such as those produced by Warner Bros. and MGM.

"Crusader Rabbit" featured the titular character, a bravery-challenged rabbit, and his sidekick, a dog named Rags, embarking on various quests. This format laid the groundwork for many future animated series, showcasing how animation could successfully transition to television and engage a weekly audience.

In contrast, the other options are either not aligned with the specific details of the question or represent different trends in animation history. For instance, "Tom and Jerry," while popular during the same era, started in the 1940s and did not have a continuous series format on television as "Crusader Rabbit" did. "Looney Tunes" refers to a collection of animated shorts and characters rather than a single serialized series, and "The Jetsons," while a notable show from the 1960s,