Final answer:
Password policy is a critical and integral part of account policies, focusing on securing user accounts through strong authentication practices such as complexity requirements and regular password changes.
Step-by-step explanation:
Password policy is indeed a legitimate subset of account policies. This is because account policies encompass various rules and guidelines that govern the security and management of user accounts. Within these account policies, password policy is a critical part that specifies the complexity, expiration, and reuse of passwords to ensure account security. Therefore, the correct answer to the question 'Is password policy a legitimate subset of account policies?' is C) Yes, it is an integral part of account policies.
Password policies are designed to protect user accounts from unauthorized access by enforcing strong authentication practices. This includes setting minimum password lengths, requiring a mix of characters (such as uppercase, lowercase, numbers, and special characters), and implementing regular password changes. These measures are integral to securing accounts and preventing breaches.