Which sign warns drivers of a steep descent?

The sign that warns drivers of a steep descent is the HILL sign. This particular sign is specifically designed to alert drivers that they are approaching a hill or a steep slope, which may require them to adjust their speed or be cautious when navigating the descent. It serves as an important safety reminder, indicating that the road ahead may pose challenges related to steep inclines, such as loss of control if speed is too high, and the need for proper gear selection in vehicles.

Other options, while informative, do not correctly convey the warning for steep descents. For instance, a crossroad sign indicates the presence of intersecting roads, and a divided highway sign informs drivers that they are entering a roadway with a median that separates opposing traffic. The slow down sign is more general and does not specifically indicate the presence of a hill or slope. Therefore, the HILL sign is the most accurate and specific warning for drivers about steep descents.