The correct option is
B Q P S R
The first statement in the sequence should be the one that best connects with S1. It should be a continuation or extension of S1.
Q is first in the sequence: Q connects best with S1. Thus, the line becomes 'The landscape here is awesome'.
Q is followed by P: P starts to support Q. It says the landscape is awesome with displaying something.
P is followed by S: S tells us what that something is. It is nature displaying a range of delights.
S is followed by R: R and S6 together add to the point made by P. They say that this range of delights are seldom seen together.
Finally, the correct sentence is 'The landscape here is awesome with Nature displaying a range of delights that are seldom seen together'.
Thus, the correct sequence is Q P S R. Hence, B is the correct option.