Final answer:
Walter, Willy Harris, and Bobo have been working on a plan to invest in a liquor store in Lorraine Hansberry's play A Raisin in the Sun, which Walter sees as an opportunity to improve his family's financial situation.
Step-by-step explanation:
The plan that Walter, Willy Harris, and Bobo have been figuring out involves investing in a liquor store.
This plan is a major plot point in Lorraine Hansberry's play, A Raisin in the Sun. Walter Lee Younger is desperate to improve his family's financial situation and sees the investment in the liquor store as a golden opportunity to do so.
Despite skepticism from his family, particularly his mother, Walter decides to go ahead with the business venture.
The plan, however, is risky and fraught with tension, given the dubious nature of Willy Harris's character and the family's overall economic instability.