1 : The ravine was about ten yards wide
P : and as I stepped down into it
Q : and four or five feet deep
R : on which I had
S : a bird flew off a rock
6 : put my hand.

The Proper sequence should be:

A. PSRQ

B. QPSR

C. RSQP

D. SRQP

Answer: Option B

Solution(By Examveda Team)

The ravine was about ten yards wide and four or five feet deep and as I stepped down into it a bird flew off a rock on which I had put my hand.