Final answer:
The Marx Brothers' stage names were: Leonard (Chico), Arthur (Harpo), Julius (Groucho), Milton (Gummo), and Herbert (Zeppo).
Step-by-step explanation:
The Marx Brothers were a famous family comedy act that rose to fame in the vaudeville era and transitioned successfully into film. The five brothers each had unique stage names that they were better known by:
- Leonard Marx was known as Chico.
- Arthur Marx was known as Harpo.
- Julius Marx was known as Groucho.
- Milton Marx was known as Gummo.
- Herbert Marx was known as Zeppo.
When answering your question about the stage names of the Marx Brothers, I did not include any that I was unsure of to avoid the risk of providing incorrect information and thus scoring zero points as per the instructions of the question. The ones I've provided are correct to the best of my knowledge.