1 : At the end of the lecture
P : for sparing their valuable time
Q : the speaker thanked the audience
R : and listening to him
S : in coming to the meeting
6 : patiently

The Proper sequence should be:

A. PSRQ

B. QPSR

C. RSPQ

D. SRQP

Answer: Option B

Solution(By Examveda Team)

At the end of the lecture the speaker thanked the audience for sparing their valuable time in coming to the meeting and listening to him patiently.