What happens to the lit portion of the moon as it goes from a Full Moon back to a New Moon?

As the moon transitions from a Full Moon back to a New Moon, the lit portion that is visible from Earth gradually decreases. This phenomenon is known as the waning phase of the moon. During this time, the illumination of the moon’s surface as seen from Earth diminishes, leading to a gradual reduction in the visible area of the moon that reflects light.

This change occurs because the angle at which sunlight hits the moon changes as the moon orbits the Earth. After the Full Moon, more shadow falls on the surface, making the illuminated part look smaller until it reaches the New Moon phase, when the moon is positioned between the Earth and the Sun and is not visible at all. Thus, the answer is correct because it accurately describes the physical process of the moon's waxing and waning as it orbits Earth.