F$.$ For the gym membership problem in Chapters $4($exer$-0,$ P$,$ and $0)$ and $5($exercises T and U$)$:

$1.$ Choose one use case and, for each scenario, create a sequence diagram.

$2.$ Create a communication diagram for each scenario of the use case chosen in Question $1.$

$3.$ Create a behavioral state machine to depict one of the classes on the class diagram you created for Chapter $5,$ exercise T$.$

$4.$ Perform a CRUDE analysis to show the interactivity of the objects in the system.

$5.$ Perform a verification and validation walkthrough of the problem.