If M is the sister of Z, Z is the wife of P and P is the son of A, how is Z related to A?

Introduction / Context:
This is a direct relationship chain question. You are given that M is the sister of Z, Z is the wife of P and P is the son of A. The task is simply to determine how Z is related to A. The test checks whether you can follow the line of marriage and parent–child relationships to reach the correct in-law term.

Given Data / Assumptions:
- M is the sister of Z. - Z is the wife of P. - P is the son of A. - All relationships are standard and there are no hidden complications.

Concept / Approach:
We only need to see how P connects A and Z. P is A's son and Z's husband. The woman who is married to one's son is one's daughter-in-law. So from A's point of view, Z is the daughter-in-law. It does not matter that M is Z's sister; that line is extra information and does not affect the Z–A relationship.

Step-by-Step Solution:
Step 1: Identify P as the son of A. So A is P's parent. Step 2: Z is given as the wife of P. So Z is married to A's son. Step 3: The wife of one's son is called one's daughter-in-law. Step 4: Therefore, from A's perspective, Z is his or her daughter-in-law. Step 5: M being the sister of Z does not change the relationship between Z and A, so it can be safely ignored for the main question.

Verification / Alternative check:
Visualise a simple family tree. At the top, A has a son P. P is married to Z. If we add M as Z's sister, she is connected sideways to Z but not directly to A. From A's viewpoint, the line is A → P (son) → Z (son's wife). Every such case is labelled daughter-in-law. This matches everyday usage and standard reasoning in verbal reasoning questions.

Why Other Options Are Wrong:
- Daughter: A daughter is a female child of A, but Z is a spouse of A's child, not a child herself. - Wife: A's wife would be P's mother, already a different person implied by the family structure. - Mother: Z is younger in the generation below A and cannot be A's mother. - Sister: A sister shares parents with you. There is no indication that Z and A have the same parents.

Common Pitfalls:
Sometimes students get distracted by extra information such as M is the sister of Z and try to force M into the relationship with A. However, the question asks only about Z's relation to A. Another pitfall is to confuse the directions of relations, for example calling A Z's father-in-law and then incorrectly labelling Z as mother-in-law. Always read carefully from the perspective requested: how Z relates to A, not how A relates to Z.

Final Answer:
Z is A's daughter-in-law.