Final answer:
The khaki uniform can be worn year-round, on or off base, and for any non-formal occasion. Therefore, the correct options are a), b) and c).
Step-by-step explanation:
The khaki uniform can be worn in multiple situations. It may be worn year-round, making it suitable for all seasons. It may also be worn both on and off base, giving flexibility to the wearer. Additionally, the khaki uniform is appropriate for any non-formal occasion, further expanding its versatility.
Loose-fitting white clothing is highly advantageous for desert dwellers due to its ability to reflect sunlight and thus repel heat during the day, helping to keep the body cool. The color white is known for its reflective properties, which is crucial in an environment like the desert where the sun can be extremely hot. Moreover, during the night, the desert temperature can drop significantly, and loose-fitting clothing can help trap a layer of warm air near the body, acting as insulation to maintain body heat.
Furthermore, covering most of the body protects the skin from the harsh sun's ultraviolet rays during the day and helps retain body warmth during the cold desert nights. This traditional attire has been adapted over centuries to suit the extreme conditions of desert climates, and desert dwellers often adhere to this style of dress as protection against the elements.
Therefore, the correct options are a), b) and c).