A window type that has top-hinged sashes and remains open during rain is called?

The correct answer is that a window type with top-hinged sashes that can remain open during rain is known as an awning window. Awning windows are designed to be hinged at the top and can be opened outward. This specific design allows them to be open during light rain while still preventing water from entering the interior, making them practical for maintaining ventilation even in inclement weather.

Other window types mentioned do not share this characteristic. Jalousie windows consist of horizontal slats that can be adjusted for ventilation but do not fully open; they typically do not provide the same rain protection as awning windows. Horizontal sliding windows slide open horizontally and do not have a hinge mechanism that keeps them open during rain. Casement windows, which are also hinged but on the side, swing outward and can allow water to enter if left open during rainfall.