Final answer:
S is the grandfather of Q.
Step-by-step explanation:
To determine how S is related to Q, we need to analyze the information given. F is the father of Q, which means that S is a grandparent of Q, as S is the father of K who is the granddaughter of P. Furthermore, Q is the brother of R, who is the daughter of P. Since S is the father of K and R is the daughter of P, it means that S is the grandfather of Q.
Therefore, the correct answer is
c) Grandfather