The brother-in-law of Nisha father is the brother of Neha. How is Nisha related to Neha?

Introduction / Context:
This question uses the term brother-in-law in a slightly indirect way and then connects that person to another woman, Neha. The goal is to find how Nisha is related to Neha. Such problems test your understanding of in-law relations and your ability to track who belongs to which generation.

Given Data / Assumptions:

• Nisha has a father, and we are told about the brother-in-law of Nisha father.
• The brother-in-law of Nisha father is the brother of Neha.
• So there is a man X who is both brother-in-law of Nisha father and brother of Neha.
• We use the common exam convention that the brother-in-law of a person is usually either the brother of that person spouse or the husband of that person sister.
• We want to know how Nisha is related to Neha, that is, the relationship from Neha point of view.

Concept / Approach:
To make the problem solvable and consistent with the answer choices, we take X to be the brother of Nisha mother. In that case X is Nisha maternal uncle and also Neha brother. If X is the brother of both Nisha mother and Neha, then Nisha mother and Neha are sisters. That makes Nisha the daughter of Neha sister, so Nisha is Neha niece.

Step-by-Step Solution:
Step 1: Let X be the man who is the brother-in-law of Nisha father and also the brother of Neha.Step 2: If X is the brother-in-law of Nisha father, he can reasonably be taken as the brother of Nisha mother in standard reasoning questions.Step 3: Thus X is the brother of Nisha mother and also the brother of Neha.Step 4: If one man X is the brother of Nisha mother and of Neha, then Nisha mother and Neha are sisters.Step 5: As Nisha is the daughter of her mother, and her mother is the sister of Neha, Nisha is the daughter of Neha sister.Step 6: A daughter of one sister is called a niece with respect to the other sister.Step 7: Therefore Nisha is the niece of Neha, or in other words, Nisha is related to Neha as niece.

Verification / Alternative check:
Take example names. Let Nisha father be Raj and her mother be Suman. Let Suman have a brother Vivek. Vivek is the brother of Nisha mother, so he is brother-in-law of Raj. Suppose Neha is Vivek sister as well. That makes Suman and Neha sisters, with Vivek their common brother. Nisha is the daughter of Suman, so from Neha point of view Nisha is the daughter of her sister, that is, her niece. This aligns exactly with the deduction made earlier.

Why Other Options Are Wrong:
Nisha is not Neha sister, because they are not children of the same parents; instead, Nisha mother and Neha are sisters. Nisha cannot be Neha mother or mother-in-law as she is in the younger generation. Cousin is also incorrect because cousins are usually children of siblings, while here Nisha is clearly one generation below Neha.

Common Pitfalls:
Many students get confused by the term brother-in-law and sometimes treat it as referring to the husband of Nisha father sister instead. While that arrangement is also possible, the question is designed so that a clear and simple path exists: the brother of Nisha mother and the brother of Neha are the same person, leading naturally to Nisha as Neha niece. Drawing a small tree with generations labelled helps keep everything clear.

Final Answer:
Nisha is related to Neha as her niece.