What does 'apprehend' mean?

The term 'apprehend' primarily means "to seize or arrest," which is reflected in the correct answer. This verb is often used in the context of law enforcement, where it refers to the act of detaining or capturing someone suspected of a crime. The word carries a sense of taking a person into custody, typically by legal authority.

While the other meanings provided in the options may seem related to understanding or questioning, they do not capture the legal connotation of 'apprehend' in the same way. Understanding something aligns more closely with comprehension, while releasing someone contrasts entirely with the idea of taking someone into custody. Questioning thoroughly implies an investigative process, which is distinct from the act of apprehending someone. Therefore, identifying 'to seize or arrest' as the meaning of 'apprehend' aligns accurately with its most commonly recognized usage.