Here's a problem to solve: The same side of the Moon is always visible from Earth because

Among the 4 following options, which is the correct answer?

- A: the Moon does not rotate on its axis.
 
- B: the far side of the Moon faces Earth during the day.
 
- C: the Moon makes one rotation per revolution around Earth.
 
- D: the rate of rotation is the same for Earth and the Moon.
 