Operating the BPU in temperatures above 125° F may require the installation of what to prevent solar heat buildup?

The correct choice involves the installation of sunshades to prevent solar heat buildup when operating the BPU in high temperatures. Sunshades are specifically designed to block direct sunlight from heating the equipment or area beneath them. By reducing the amount of solar radiation that reaches the surface of the BPU, sunshades help maintain a more stable and cooler operating temperature. This is particularly important in environments where temperatures exceed 125° F, as excessive heat can impact the performance and longevity of equipment.

Other options like noise baffles, cooling fans, and windshades do not directly address the issue of solar heat buildup. Noise baffles are used primarily to reduce sound levels, cooling fans help circulate air to manage temperature but do not block sunlight, and windshades are designed to deflect wind rather than mitigate thermal gain from the sun. Hence, sunshades are the most effective solution for the specific need of preventing solar heat accumulation in this context.