Assertion (A): The same face of the Moon is always presented to the Earth.

Reason (R): The Moon rotates about its own axis in days which is about the same time that it takes to orbit the earth.

Both A and R are true and R is the correct explanation of A.

The correct answer is Option (1) - Both A and R are true and R is the correct explanation of A.

• Assertion (A) is true: We always see the exact same side of the Moon from Earth (this phenomenon is known as tidal locking).
• Reason (R) is true: The Moon takes about 27.3 days to rotate once on its own axis, which is the exact same amount of time it takes to complete one revolution around the Earth.

Because its rotational speed matches its orbital speed, the Moon turns just enough during its orbit to keep the same side facing Earth at all times. Therefore, R is the correct explanation for A.