P : we shall hardly expect to find life there
Q : knowing that
R : there is neither air nor water
S : on the moon

The Proper sequence should be:

A. PQRS

B. QRSP

C. RSPQ

D. SRQP

Answer: Option A

Solution(By Examveda Team)

We shall hardly expect to find life there knowing that there is neither air nor water on the moon.