Explanation:

- L is the grandson of W and son of P, meaning L and P are male.

- C is the niece of U, so C is a female, and U is her aunt or uncle. U is unmarried.

- R is the mother-in-law of T. T must be married to P (having L), making R the grandmother or W’s partner.

- T and P form one couple, while R and possibly W form another married couple.

- T has two children, which can be L and C.

- P does not have a sister, so his sibling could be U.

- There are two married couples and seven family members.

- Identified males: L, P, and possibly W or U, not considering U's gender (as C is the niece).

Thus, there are likely three or four male members.

Correct Answer: Option: 5, 3 or 4