According to the given information, 1) R runs faster than Q and P. R > Q and P 2) T runs faster than P but slower than Q. Q > T > P 3) S runs slower than only one friend. _ > S > _ > _ > _ By combining all the given information, we get the final arrangement: R > S > Q > T > P According to the above arrangement, The fastest among all is R. Hence, "R" is the correct answer