W is the sister of N’s mother P. F is the husband of P. R is the brother of F. How is W related to R?

Correct option is D

W is P’s sister, and F is P’s husband. So W is the sister-in-law of F. R is the brother of F. Therefore, W is the sister of R's brother's wife = Brother’s wife’s sister.
Explanation of options: (a) ✘ This would make W the mother of P, but she is P’s sister. Incorrect. (b) ✘ W is not F’s or R’s mother; she is the sister of R’s brother’s wife. (c) ✘ W is not R’s biological sister but related through marriage. (d) ✔ Correct — W is the sister of R's brother's (F’s) wife (P).