P will follow the opening line which describes Helen and her studies. At that age she was getting requests for appearance in magazines. So, S will follow P. Q tells us about the place from where she got the invitation. So, it will follow the next. R tells us the scene when Helen went there and the crowd got crazy. S6 further adds to the behaviour of the crowd towards her. PSQR is the correct sequence. Hence, (c) is the correct option.