P is more intelligent than Q.  Q is not as intelligent as R.  S is more intelligent than T, but not as good as P. Who is the most intelligent of all ?

P

P  >  Q    R  >  Q        S  >  T         P  >  S        

P  >  S         R  >  T

with the help of above information we conclude that

P > R > Q> S >T

So, correct answer is option (C).