Aspect refers to the direction a slope faces. Slopes facing which direction are generally warmer and drier?

Slopes that face southwest are generally warmer and drier due to their exposure to sunlight throughout much of the day. In the northern hemisphere, the sun travels across the southern sky, meaning that southwest slopes receive direct sunlight for more hours compared to slopes facing other directions. This increased sunlight leads to higher temperatures and lower moisture retention, making these areas typically warmer and drier than others, such as northeast- or northwest-facing slopes that receive less direct sunlight.

In contrast, northeast and northwest slopes can be cooler and more shaded, as they do not get as much direct sunlight. Southeast slopes can also receive considerable sun exposure, but the southwest slopes tend to have the best combination of warmth and dryness. Thus, the option indicating southwestern exposure accurately reflects the climatic conditions associated with slope aspect.