What is typically a thin metal strip found around a door to prevent water intrusion?

The correct choice is a thin metal strip known as flashing. Flashing serves the critical function of directing water away from seams and joints in construction, particularly at openings like doors and windows. It is typically installed in areas where water might infiltrate the building, such as where the roof meets the walls or around door frames. By creating a barrier that deflects water, flashing helps prevent leaks and water damage, ensuring that the interior of a structure remains dry and protected.

In contrast, baseboard is a type of trim that runs along the bottom of interior walls; it has decorative purposes and does not serve to prevent water intrusion. Trim includes various moldings and details around doors, windows, or ceilings, enhancing aesthetic appeal without contributing to water management. Soffit refers to the material that covers the underside of a roof overhang or eave; its main functions involve ventilation and concealment, not water diversion. Hence, flashing is the best answer in this context, as it is specifically designed for water management around doors.