[ alt="blood relation" src="//storage.googleapis.com/tb-img/production/21/11/blood%20relation.png" style="width: 186px; height: 244px;"> 1) C is the sister of F. 2) D is the father of A and grandfather of F. [ alt="" src="data:image/png;base64,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" style="height: 195px; width: 200px;"> 3) B is the brother of E's husband. [ alt="" src="data:image/png;base64,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" style="height: 60px; width: 350px;"> 4) There are two fathers, three brothers and one mother in the group. The family tree are given below - [ alt="Q18 12" src="//storage.googleapis.com/tb-img/production/21/11/Q18_12.png" style="width: 309px; height: 265px;"> F is the son of E. Hence, "son" is the correct answer.