The Moon is less bright. The Moon is closer to Earth. The Moon shines mostly at night. The Moon is full only once a month.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Why is it safer to look at the Moon than it is to look at the Sun?
Possibilities:
- The Moon is less bright.
- The Moon is closer to Earth.
- The Moon shines mostly at night.
- The Moon is full only once a month.

The Moon is less bright.