The best answer is D (all of the above).
Here's the reasoning:
- A place with palm trees and sand dunes typically indicates a desert or arid environment, suggesting that the temperature at night could be cold (especially when moisture is low).
- Such environments often receive very little rain each year, reinforcing the idea that it is a dry climate.
- Temperatures can indeed rise to more than 100º F in desert regions, making option C also likely true.
Therefore, all statements (a, b, and c) are plausible conclusions based on the description provided.