Activities permissible for nonbanking purposes generally involve services or functions closely related to financial services or banking operations. Servicing mortgage loans (A), providing mortgage loan data processing services to mortgage companies (C), and acting as a broker for credit life insurance (D) are all activities that align with the financial and banking-related services. However, providing general courier services to businesses around the bank office (B) does not relate directly to financial or banking services and hence is not a permissible nonbanking activity.