What phrase describes the Earth's incline towards the sun?

The correct term for the Earth's incline towards the sun is "axial tilt." This refers to the angle at which the Earth's axis is tilted in relation to its orbit around the sun, which is approximately 23.5 degrees. This axial tilt is significant because it causes the changing seasons as different parts of the Earth receive varying amounts of sunlight throughout the year.

The plane of the ecliptic is the imaginary plane that contains the path of the Earth's orbit around the sun. While it relates to the Earth's orbital dynamics, it does not specifically describe the tilt of the Earth's axis. Hence, it would not be the right choice for describing the Earth's incline.