Explanation:

- N is the father of D, establishing that N and D are part of the same lineage, with N being one generation above.

- E is married to N, indicating E is D's mother, as N and E are a married couple.

- G and D are siblings, showing that G and D have the same parents.

- C is married to G, making G and C a married couple, and C the sibling-in-law to D.

- N has no son, so D and G must be daughters.

- K is the father of E, positioning K one generation higher than E and, therefore, D.

- Q is the only son of C, indicating G and C's child, making Q the nephew of D.

- A is the brother-in-law of N, suggesting A is either N’s wife’s brother or G’s husband.

Considering the above, K, as the father of E, is the Grand Father to D.

- Option: 4 - Grand Father: This is the correct relationship.