What does Biff do that elates Willy? How does Happy try to attract Willy's attention? How does Ben influence Willy at this point?

During the climax of the play back at home after the scene at Frank's Chop House, Biff confronts Willy about his epiphany. Biff realizes that the perceptions he had held for his entire life (that Willy instilled into him) up till this point were false. Willy essentially says that Biff is only saying this to spite him, Biff then begins to cry for his father's delusional and forgone state. At this point, Willy replies "isn't that remarkable? Biff- He likes me!"

Happy, being the more burdensome and less loved son tries to attract attention to both of his parents attention by saying "I've lost weight" and "I'm getting married, Mom. I wanted to tell you." He's either just brushed off, or ignored completely. During the requiem, he vows to pursue his father's life as to not have Willy's death be in vain, being another example of his attempt to gain reassurance and love from a very unloving family.

At the end, Ben changes from the only one whom had deterred Willy from killing himself, into approving and convincing him that it is the only way to leave his legacy for Biff.