Correct option is C
Given:
Seven friends C, D, E, P, Q, R and S are sitting in a straight line facing north.
Only twopeople sits to the left of R.
Only three people sit between D and R.
Only two people sitbetween R and S.
E sits third to the left of P.
C sits to the immediate right of P.
From the given information seating arrangement will be.

Three people sit between Q and S.
Thus, correct option is (c).