Final answer:
The correct statement describing the Moon's orbit around Earth is that it takes about 27 days to complete. So, option C is correct.
Step-by-step explanation:
When discussing the movement of the Moon around the Earth, option c) is the correct one. It states that it takes about 27 days for the moon to make a full orbit around the Earth. This period is known as the Moon's sidereal period, and it is exactly 27.3217 days long. This count reflects a full orbit concerning the stars or a sidereal month. However, when observing the Moon from Earth, the cycle we notice from one phase to the next, such as from new moon to new moon, is called a solar month and is 29.5306 days. This difference in days is due to the Earth's movement around the Sun, requiring the Moon to orbit more than a full circle to align with the Sun and Earth in the same way.
The Moon also moves eastward in the sky at a rate of about 0.5° per hour. Therefore, throughout a single night, it travels eastward among the stars, which results in an average daily delay of moonrise by about 50 minutes. As the Moon orbits the Earth, it moves around 12° daily, equivalent to 24 times its diameter. This motion causes its appearance in the sky to change each night.