Concept:Determine familial relationship through given connections.Explanation:• A is father of C.• C is sister of D, so C and D are siblings.• Thus A is also father of D.• D is son of B, so B is mother of D.• Hence B is wife of A.• E is brother of A (so E and A are brothers).• Therefore B is E's brother's wife → B is E's sister-in-law.Answer:Sister-in-law