How is the HMMWV designed to perform in extreme weather conditions?

The HMMWV is engineered to perform effectively across a range of extreme weather conditions, making it a versatile vehicle for military operations. Its design incorporates features that enable it to handle both hot and cold environments. For instance, it has a powerful heating and ventilation system to maintain functionality and comfort in extremely cold weather while also being equipped with cooling systems to operate efficiently in high temperatures. This robust engineering allows the vehicle to navigate diverse terrains and climates without compromising performance, which is essential for military readiness and operational flexibility.

The other options do not accurately reflect the HMMWV's capabilities. The vehicle is not limited to one type of weather condition, nor is it ineffective in extreme situations. Instead, it is specifically built to address the challenges posed by various environmental extremes, making it suitable for a wide range of missions.