Final answer:
When using Mundo on a public computer, CC must log out and clear the browser history after use. CC should not share the login credentials with others (option a) as this can compromise the account's security.
Step-by-step explanation:
When using Mundo on a public computer, it is important to ensure the security of your account.
CC should not share the login credentials with others (option a) as this can compromise the account's security.
CC should also not save the login information on the public computer (option b) as this can allow unauthorized access to the account.
The correct action for CC is to log out and clear the browser history after using Mundo (option c). This helps to ensure that no one else can access the account or view personal information.