Device drivers that enable the OS to control and communicate with hardware need to be securely designed, developed and deployed because

A.
They are typically installed by end-users and granted access to supervisor state to help them run faster.

B.
They are typically installed by administrators and granted access to user mode state to help them run faster.

C.
They are typically installed by software without human interaction.

D.
They are integrated as part of the operating system.

Explanation:
A: Device drivers that control input/output devices are typically installed by end-users (not necessarily administrators) and are often granted access to supervisor state to help them run faster. This may allow a malformed driver to be used to compromise the system unless other controls are in place to mitigate this risk. Drivers are not add-ons to the operating system and usually require human interaction for installation. Page 722.