S is sitting second to the left of R and R is not sitting at any of the ends. From these two sentences, there are two possibilities as shown.
_ _ _ _ _                     _ _ _ _ _  _ S _ R _                     S _ R _ _   Case - 1                      Case - 2 The person who faces T is to the immediate left of M. M is sitting at the extreme right end. This implies that M should sit at the extreme right and T should be sitting beside S. Hence, Case 1 is ruled out. Now the arrangement looks like this,
M _ _ _ _ S T _ R _  R is an immediate neighbour of U. The person who faces U is an immediate neighbour of both P and N. There are two persons between P and L. The remaining position will be occupied by Q. Final arrangement will be as shown below, M L N O P S T R U Q L is sitting second to the right of O. Hence, option c is the correct answer.