(A) slowly drifting away
(B) from Earth at about
(C) the Moon is
(D) 1.5 inches per year

The following question gives a sentence which has been divided into four parts which may not be in their correct order of narrative. The sentence is then followed by five options, one of which gives the sequence of the rearranged parts to make the sentence meaningful. Choose the option which gives the correct sequence of the parts. If the sentence is already arranged in the correct sequence, mark option " No rearrangement required " as the answer.

The correct option is CABD.

To arrange the given sentence fragments into a coherent and grammatically correct sentence, let us analyze the role of each part:
- (C) "the Moon is" introduces the main subject ("the Moon") followed by the linking verb ("is"). This makes it the most natural opening phrase of the sentence.
- (A) "slowly drifting away" contains the present participle phrase describing the action/movement of the Moon.
- (B) "from Earth at about" provides the direction of the movement (drifting away from Earth) and leads into a rate/measurement.
- (D) "1.5 inches per year" specifies the rate of movement, completing the sentence.

Combining these parts in the order C → A → B → D forms the complete, meaningful sentence:
"The Moon is slowly drifting away from Earth at about 1.5 inches per year."

Therefore, the correct sequence is CABD.