The correct answer is C. December 23.
The Earth’s axis is tilted at an angle of 23.5 degrees relative to its orbital plane. This means that during the Northern Hemisphere’s winter, the North Pole is tilted away from the sun, and the sun does not rise above the horizon for several weeks. This is called the polar night. The polar night begins on December 21, the winter solstice, and ends on March 20, the vernal equinox.
On December 23, the sun is at its lowest point in the sky at the North Pole. This is called the winter solstice. The sun does not rise above the horizon at all on this day. After December 23, the days start to get longer, and the sun will eventually rise above the horizon again on March 20.
The other options are incorrect because they are not dates on which the sun disappears from view near the North Pole.