Blood Relations

Concept:Determine family relationships by linking given statements.Explanation:• $A$ is the sister of $B$. So $A$ and $B$ are siblings.• $B$ is the brother of $C$. So $B$ and $C$ are also siblings. Thus $A$, $B$, and $C$ all share the same parents.• $C$ is the son of $D$. So $D$ is a parent of $C$. Since $A$ and $C$ are siblings, $D$ is also a parent of $A$.• Among the options, "Mother" is the only one that describes a parent. "Daughter", "Son", and "Uncle" do not fit.Answer:D is the mother of A.