Bored (cylindrical) locks typically include which feature?

Bored (cylindrical) locks are designed to be installed into a drilled hole in the door and typically feature a key-in-the-knob lock mechanism. This type of lock incorporates the locking cylinder directly into the knob itself, allowing for easy key access from one side of the door. The simplicity and convenience of having both the knob and the locking mechanism combined into one unit is a defining characteristic of bored locks.

The other options relate to different locking mechanisms and designs. For example, deadbolt mechanisms provide an added layer of security by using a separate bolt system and are often found in conjunction with bored locks, but they are not a standard feature of all bored locks. Similarly, sliding latches are typically associated with different types of door locks, often found in interior doors where a simple latch-and-catch mechanism suffices, rather than incorporating a key. Lever handles are used in various types of locks, including but not limited to bored locks, but they do not represent the classic cylindrical locking mechanism highlighted in the question.