S1:tThe art of growing old is one which the passage of time has forced upon my attention.P :tOne of these is undue absorption in the past.Q :tOne's thought must be directed to the future and to things about which there is something to be done.R :tPsychologically, there are two dangers to be guarded against in old age.S :tIt does not do to live in memories, in regrets for the good old days, or in sadness about friend who are dead.S6:tThis is not always easy one's own past is gradually increasing weight.The Proper sequence should be:

S1:tThe art of growing old is one which the passage of time has forced

1.	S1:tThe art of growing old is one which the passage of time has forced upon my attention.P :tOne of these is undue absorption in the past.Q :tOne's thought must be directed to the future and to things about which there is something to be done.R :tPsychologically, there are two dangers to be guarded against in old age.S :tIt does not do to live in memories, in regrets for the good old days, or in sadness about friend who are dead.S6:tThis is not always easy one's own past is gradually increasing weight.The Proper sequence should be:
A.	QSRP
B.	RPQS
C.	RPSQ
D.	QPRS
Answer» D. QPRS