**Reflecting the Sunlight:**

The correct answer is option D, which states that the moon shines by reflecting sunlight. This answer is supported by scientific evidence and our understanding of the moon's characteristics. Let's delve deeper into the details.

**Sun as the Primary Light Source:**

The sun is the primary source of light in our solar system. It emits electromagnetic radiation, including visible light, which is a form of energy. This light travels through space and reaches different celestial bodies, including the moon.

**Moon's Surface Composition:**

The moon's surface is covered with a layer of dust and rocks, which are primarily made up of minerals such as basalt and anorthosite. These materials have different reflective properties, with some being more reflective than others.

**Reflecting Sunlight:**

When sunlight strikes the moon's surface, it encounters this layer of dust and rocks. As a result, some of the light is absorbed by the moon's surface, while the rest is reflected back into space. This reflected light is what we perceive as moonlight.

**Phases of the Moon:**

The moon's appearance changes as it orbits around the Earth. These changes, known as the phases of the moon, are a result of the varying positions of the moon, Earth, and the sun. During a full moon, the moon is on the opposite side of the Earth from the sun, and its entire illuminated side faces us. This is when the moon appears brightest in the night sky.

**Moonlight Intensity:**

The intensity of moonlight can vary depending on several factors. First, the distance between the Earth and the moon can impact the amount of sunlight that reaches the moon's surface and, subsequently, the intensity of the reflected light. Additionally, the moon's position in its orbit can affect the angle at which sunlight strikes its surface, altering the brightness of the moon.

**Conclusion:**

In conclusion, the moon shines by reflecting sunlight. The sun, as the primary light source in our solar system, emits light that travels to the moon. When this light encounters the moon's surface, it is reflected back into space, resulting in moonlight. Understanding the moon's reflective properties and its position in relation to the Earth and the sun allows us to explain the phenomenon of moonshine.

Light falls on the object... we see that object by the reflection...like that only...sun (luminous=own light) is star its having light on its own... moon is the satellite of the earth (non luminous= it receives light from others)...sunlight fall on the surface of the earth.... light reflects on the moon... so that by the process of the reflection moon shines