In this verbal analogy question, select the related word from the given alternatives to complete the pair: Father : Parent :: Sister : ?

Introduction / Context:
This question is a verbal analogy that tests your understanding of family relationship terminology. The pair Father and Parent is given, and you must choose the word that stands to Sister in the same way. Such questions appear frequently in reasoning and verbal ability sections to check whether you can move correctly from a specific family role to a broader category or vice versa.

Given Data / Assumptions:
The first pair is Father and Parent.
The second pair is Sister and an unknown word from the options.
The answer choices are Other, Brother, Daughter, Sibling, and Relative.
We assume that Father is an example of the more general category Parent, so we must identify the general category to which Sister belongs.

Concept / Approach:
A Father is a specific type of Parent, just as a Mother is. So the relationship is specific family role to the general classification that includes that role. In the same way, Sister is a specific type of Sibling, as are Brother and sometimes step siblings. Therefore, to keep the same pattern, we must select the general term that includes Sister, which is Sibling. Recognising these hierarchical relationships between specific roles and broader family categories is the key to solving this analogy.

Step-by-Step Solution:
Step 1: Interpret the first pair. Father is a specific male Parent.Step 2: Express the relationship: Father is a type of Parent.Step 3: Apply an analogous relationship to Sister. We need a general term of which Sister is one type.Step 4: Brother and Sister together fall under the broader category of Siblings.Step 5: Therefore, Sister is a type of Sibling, making Sibling the correct match.Step 6: Check the options and confirm that Sibling is present and fits the same specific to general pattern as Father to Parent.

Verification / Alternative check:
We can verify by rewriting the analogy as a general statement. A Father is a Parent. A Sister is a Sibling. Both sentences show the same kind of relationship, where the first term is a particular role and the second term is its broader category. No other option produces such a clean and precise mapping from Sister to a more general family term. This confirms that Sibling is the correct answer.

Why Other Options Are Wrong:
Option Other is too vague and not a recognised family category that directly includes Sister.
Option Brother is another specific family role, parallel to Sister, not the general category that contains Sister.
Option Daughter is a different relational term based on parent child relationship, and while a Sister can also be a Daughter, this is not the same type of categorisation as Parent to Father.
Option Relative is a very broad term that includes many relationships, but the original analogy uses a more precise category, Parent, rather than a very wide grouping like Relative, so Sibling is a better and more accurate match.

Common Pitfalls:
Test takers sometimes choose Brother because it appears close to Sister in everyday usage, but this confuses a parallel relationship with a hierarchical one. The analogy requires a specific to general mapping, not a pair of equals. Others may choose Relative because it seems to include Sister, but that is too broad when the original pair uses a more specific category. Always ask whether the second word is a direct category name for the first to maintain the structure of the analogy.

Final Answer:
Hence, in the analogy Father : Parent :: Sister : ?, the correctly related word is Sibling.