The correct answer to this question is C. The new moon is the first lunar phase. This phase occurs when the Sun and Moon have an ecliptic longitude which is the same. As block C shows, the new moon is in the shape of a crescent and is very thin.
The disk during this phase is not visible to the human eye, unless they are using a telescope. A new moon will last approximately 29 days. This length is due to many aspects of nature, including neap and spring tides. The mean moments of the new moon can be calculated using the formula d = 5.598661 + 29.5305888610 x N.
M. Porter, Senior Executive, Master of Art, San Jose
Answered May 30, 2019
The new moon, which is depicted in block C, is situated between the earth and the sun, and the entire illumined portion of the moon is on the back side of the moon, which is the half that we as human beings can not see. The moon phases occur in the order that follows: New moon, full moon, first and third quarter, and all the stages in between.
Exactly one half of the moon is glowing because it has been illuminated by the sun. Most people are curious regarding the difference between the new and full moons. The new moon is dark and is not illuminated fully by the sun; hence, when the moon is full and glowing, it appears to be brighter in the sky.