What are Sun spots?

A. Regions on earth without winter climate

B. Desert areas on the sun

C. Dark patches on the surface of the sun which are cooler areas

D. Dark patches on the surface of the Sun resulting from a localised fall in the temperature to about 4000 K

Answer: Option D

Solution(By Examveda Team)

A dark patch in the sun's photosphere resulting from a localized fall in temperature to about 4000 K. Most spots have a central very dark umbra surrounded by a lighter penumbra. Sunspots tend to occur in clusters and to last about two weeks.