Why Is the Photosphere Called the Visible Surface of the Sun

question 269

Multiple Choice

Why is the photosphere called the visible surface of the Sun? Each of the statements below is a partial answer to this question EXCEPT ONE.Which is the exception?

• A) The photosphere is indeed a surface with nothing above it and an abrupt density increase just below it.
• B) Most of the visible light we see from the Sun originates within the photosphere.
• C) Because of increased density below the photosphere, light originating there is unlikely to survive the journey out of the Sun.
• D) The gas above the photosphere is too rarified to produce a significant amount of light.

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