Which layer of the sun's atmosphere are you looking at when you look at an image of the sun? a. photosphere b. chromosphere c. corona d. prominence

The answer is Photosphere.  The photosphere is the lowest layer of the solar atmosphere. It is essentially the solar "surface" that we see when we look at the Sun in "white" light.  It is like a glowing fog, so at a distance, it looks solid, the same way a cloud looks solid from a distance.

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