Based on the description of the picture with palm trees in the foreground and sand dunes in the background, it is likely that the area is a desert region. Therefore, the conclusions you might draw include:
b. This place gets very little rain each year.
c. The temperature can rise to more than 100º F.
However, the conclusion that “a. The temperature at night is cold” might not generally apply to desert regions, which can experience significant temperature drops at night but are often still warm.
Given this information, the best answer would be:
b. This place gets very little rain each year.
If the context of the environment strongly supports extreme temperature variations at night, then option d. all of the above could also be plausible, but more information would be needed to confirm that specific aspect. Overall, b appears to be the most reliable conclusion based on the given context.