Dan referring to Photosphere layer of the sun.
The brightest surface or layer of the sun is called the photosphere although it is much cooler about 6,000 degrees Celsius as compared to other layers of the sun but gives brightest light so we can conclude that Dan referring to Photosphere layer of the sun.
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Answer:
Dan is referring to Photosphere layer of the sun.
Explanation:
The photosphere is the Sun's visible surface, from which the majority of the Sun's light that reaches Earth directly is emitted. That is the light Dan is referring to being the "brightest street lamp in a city."
