Explanation:

Correct option 4: Grandmother 

D is the sister of A, and P is the niece of A, so P is D’s daughter.

Since O is the father-in-law of D, D's husband is O's son → D is married to E (since E is male and child of S).

So A is the brother of D → A is E’s brother-in-law → matches statement 2.

Therefore, D and E are a married couple, and they have two children (one son and one daughter) → from statement 8.

One child is P (female), so she is the daughter, and the other is R (assumed to be male, not necessary though).

G is the maternal grandfather of R → So G is D’s father.

D's father is G → so D is G’s daughter.

S is E’s parent → from statement 3.

Now let's construct the relationships:

G (male) -- married to S
              |
              +-- D (female) -- married to E (male, son of S)
                        |
                        +-- P (female, niece of A)
                        +-- R
A (male, brother of D)
O (male, father of E)  → E is son of both S and O

Answer: S is the grandmother of P