I assume it is the D, the river. The other answers don't make any sense and the river would 'reflect' the hues of the sky.
The answer is D <span>all of the above</span>
Answer:
The camera obscura later became a popular tool during the Middle Ages and the Renaissance, particularly after inventors began using biconvex lenses to brighten its images. Astronomers used it to protect their eyes while observing the sun and solar eclipses, and artists employed it as an aid in portraiture and landscape painting.
Explanation: