Explanation:

- The family consists of three generations.

- P is the mother of R and Q, implying P is female.

- G is P’s son-in-law, which means G is married to P's daughter, R.

- L is the daughter of R, making L a female.

- N is L's maternal grandfather, married to P, with one son (Q) and one daughter (R).

- S is R’s sister-in-law, implying she is married to R’s sibling, Q.

- K is the niece of Q, meaning K is likely L.

The family members:

- Females: P, R, L, S, and possibly K if distinct from L.

So, there are Five females in the family.

Correct Answer: Option 3: Five