Answer:
The correct option is D) Does the amount of radiation from the sun affect air temperature?
Step-by-step explanation:
The graph represents the effect of Sunlight or global radiation on the temperature of the air present in the atmosphere.
As we know, as the amount of radiation increases, the temperature of the Earth also increases. This phenomenon is perfectly illustrated in the graph mentioned in the question. Hence, D is the correct option.
Other options like option A are not correct because the graph does not illustrates the parts of the Earth which receive the most global radiation over a year.