The answer is B. Sun-Moon.
In the other three pairs, the words are opposites. Night is the opposite of day, white is the opposite of black, and light is the opposite of dark. However, the sun and moon are not opposites. They are both celestial bodies that orbit the Earth. The sun is a star, while the moon is a satellite. The sun is much larger than the moon, and it is the source of light and heat for the Earth. The moon is much smaller than the sun, and it reflects light from the sun.
The sun and moon are often associated with different things. The sun is often associated with life, while the moon is often associated with death. The sun is also often associated with masculinity, while the moon is often associated with femininity. However, these associations are not always true. For example, the moon is essential for life on Earth, as it helps to regulate the tides.
In conclusion, the sun and moon are not opposites. They are both celestial bodies that orbit the Earth. The sun is a star, while the moon is a satellite. The sun is much larger than the moon, and it is the source of light and heat for the Earth. The moon is much smaller than the sun, and it reflects light from the sun.