Sunspots are dark because they are cooler than the surrounding gases. So, the correct option is A.
What do you mean by Sunspots?
Sunspots may be defined as patches that are present on the surface of the sun that are visible and dark in color with help of a telescope.
These sunspots are dark, spherical, and some planet-sized in structure. These structures appear dark because the temperature of this region is slightly lower than as compared to its surroundings.
Therefore, sunspots are dark because they are cooler than the surrounding gases. So, the correct option is A.
To learn more about Sunspots, refer to the link:
https://brainly.com/question/8102155
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