Which of the following expressions indicates 'H is the brother of N'?

Explanation Option (b) is correct. Let us look at each option whether it gives us the required relationship or not. Option A - H is father of R who is mother of D, who is mother of N. H thus becomes Great Grandfather of N. The option is thus not correct. Option B - N is the daughter of F who is husband of D. D is the mother of H who is the father of R. N and H are thus siblings of the parents F and D. H is male (father of R). Again H is brother of N. The option (B) is correct.