The answer is D: The moon’s surface reflects sunlight.
The moon is Earth´s natural satellite. It is an astronomical body that orbits the Earth in a synchronous rotation with it (that is why we can only see, from Earth, one of its sides, the other being the dark side of the moon). Since the moon, unlike the sun which is a star that produces energy and is, therefore, a light source, it does not shine through its own light, rather it can only reflect upon its surface the sun´s light allowing us to see it with our bare eyes from the Earth.
It is a metaphor for a mature and deeper kind of love. When Romeo sees Juliet, he is struck by her
and goes so far as compare Juliet to a shrine that just goes to show deep his love
for her is. Upon seeing her, he knows
that he has found true love.