In a collection of excellent and amusing essays entitled "The Law and the Multiverse" a series of authors have examined superhero groups like the Avengers and DC's the Justice League to attempt to answer the all-important question: In addition to being a team of superheroes, what legal entity should groups like the Avengers organize themselves as. Based on this information and the pros and cons of each type of business organization outlined in your text, select which entity you believe would work best for the Avengers paying special attention to the issues of liability and the fluid nature of the group's membership.