Correct Option
The correct option isThey experience about six months of day and six months of night.
Explanation
The duration of day and night varies across different latitudes due to the Earth's revolution around the Sun and the inclination of its axis. This variation becomes most extreme at the poles.
Statement-wise Analysis
- Statement They experience 12 hours of day and 12 hours of night daily. is Incorrect: Experiencing 12 hours of day and 12 hours of night daily throughout the year is a phenomenon characteristic of the Equator, not the poles.
- Statement They experience about six months of day and six months of night. is Correct: Due to the Earth's axial tilt (approximately 66.5° to the orbital plane), the North Pole is inclined towards the Sun for about six months (from the March Equinox to the September Equinox), resulting in continuous daylight. During this same period, the South Pole is tilted away, experiencing continuous darkness. The situation reverses after the September Equinox.
- Statement They never receive sunlight. is Incorrect: The poles receive sunlight for approximately half of the year; they are not permanently devoid of solar radiation.
- Statement They are always tilted towards the Sun. is Incorrect: The poles are not always tilted towards the Sun. As the Earth revolves, the orientation of the axis relative to the Sun changes, causing each pole to be tilted towards the Sun for half the year and away from it for the other half.
Key Takeaway: The poles experience a unique diurnal cycle consisting of approximately six months of continuous daylight followed by six months of continuous darkness, driven by the Earth's axial tilt and revolution.