Final answer:
Based on the information, future climate scenarios for the Southwest region predict that droughts will last longer.
Step-by-step explanation:
Future climate scenarios for the Southwest region predict that droughts will last longer (C). This is attributed to factors such as increased temperatures leading to more rapid evaporation, changing storm patterns, and decreased snowpack providing less water for the region. In addition, evidence suggests that while some areas may experience an increase in precipitation, the Southwest is likely to face more arid conditions, exacerbating drought severity. The likelihood of hurricanes being less frequent is uncertain; however, their intensity and the amount of precipitation they deliver are expected to increase. The core monsoon shifting farther north and the area becoming more humid are not clearly indicated in the provided reference materials for the Southwest region.