What type of subject may attempt to harm the officer?

The correct choice is an active aggressor, as this type of subject poses a direct threat to the safety of the officer. An active aggressor demonstrates an intention to cause harm, potentially using physical violence or aggressive behavior. This behavior often involves actions that indicate a willingness to engage in a confrontation, which can escalate situations quickly and unpredictably.

In contrast, passive compliant subjects generally accept authority and do not resist, while passive resistors may show non-compliance but without an intention to inflict harm. Active resistors might physically resist an order or attempt to evade but also do not typically display the intent to cause physical harm to an officer. Thus, an active aggressor is recognized as the type of individual that must be approached with heightened caution and readiness for potential defensive action.