A is the sister of B. B is married to D. B and D have a daughter G. How is G related to A?

Introduction / Context:
This is a straightforward family relation question involving one pair of siblings, a marriage and a child. The problem asks how the child G is related to A, where A is the sister of G father B. Such questions appear very often in reasoning sections and test basic understanding of aunt and niece relationships.

Given Data / Assumptions:

• A is the sister of B, so A and B are siblings in the same generation.
• B is married to D.
• B and D have a daughter, G.
• Thus B is G father and D is G mother.
• We assume a standard nuclear family structure.

Concept / Approach:
The central idea is that A is the sister of G father. The sister of a father is called an aunt. From the child perspective, the daughter of a person sibling is a niece. Since the question asks how G is related to A, you must answer from A point of view: G is her niece.

Step-by-Step Solution:
Step 1: A and B are siblings. A is explicitly described as the sister, so A is female.Step 2: B is married to D, and together they have a daughter G. So B is a parent of G.Step 3: This means B is G father and D is G mother, because G is referred to as their daughter.Step 4: A, being the sister of B, is the paternal aunt of G. That is, she is the father sister.Step 5: From G perspective, A is her aunt. From A perspective, G is her niece.Step 6: The question is, "How is G related to A?" So the correct relationship is niece.

Verification / Alternative check:
Attach simple names. Let A be Anu, B be Bhavin, D be Divya and G be Gia. Anu and Bhavin are siblings. Bhavin and Divya have a daughter Gia. For Anu, Gia is the child of her brother, so Gia is her niece. This is exactly the relation described by the word niece and matches our reasoning.

Why Other Options Are Wrong:
G is not A sister, because they are different generations; A is the sister of G father, not of G. G is not A daughter, because A is not married to B or D and there is no indication that she is a parent. G is not a cousin to A, because cousins are usually children of siblings in the same generation. "Aunt" describes how A is related to G, not how G is related to A, so that option is reversed.

Common Pitfalls:
Students sometimes answer aunt when the question asks for the relation of G to A, which is niece. Carefully check the direction of the relation requested: whether you should answer from the first person to the second or from the second to the first. Drawing a small family tree with generations clearly marked makes this less confusing.

Final Answer:
G is related to A as her niece.