A. A well-constructed, energy-efficient home
B. The solar constant
C. Incoming solar radiation
D. An increase in solar output
✅ The correct answer is option C.
The term insolation is derived from the words “incoming solar radiation”. Insolation is specifically applied to radiation which is arriving at earth’s atmosphere first and then earth surface.
The term insolation is derived from the words “incoming solar radiation”. Insolation is specifically applied to radiation which is arriving at earth’s atmosphere first and then earth surface.