During a review of support tickets, Leonidas's organization discovered that password changes accounted for more than a quarter of its help desk's cases. Which of the following options would be most likely to decrease that number significantly?

Self-service password reset tools typically have a significant impact on the number of password reset contacts that a help desk has. Two-factor and biometric authentication both add complexity and may actually increase the number of contacts. Passphrases can be easier to remember than traditional complex passwords and may decrease calls, but they don't have the same impact that a self-service system does.