How is Giridhar's mother's husband's father-in-law's son's daughter related to Giridhar?

Introduction / Context:
This question uses a long chain of relations that looks intimidating at first glance: mother's husband's father-in-law's son's daughter. Such problems are meant to test your ability to follow a relational chain step by step and to simplify it into a standard relation like cousin, sister or niece. The key is not to rush and to handle each link calmly.

Given Data / Assumptions:

• We start from Giridhar.
• His mother's husband is his father.
• The father in law of his father is the father of his mother, that is, his maternal grandfather.
• The son of that maternal grandfather is a maternal uncle of Giridhar.
• The daughter of that son is the final person we want to relate to Giridhar.

Concept / Approach:
The sequence mother's husband reduces to father. Father's father in law is the father of his wife, who is the maternal grandfather. The son of the maternal grandfather is a maternal uncle of Giridhar. Finally, the daughter of this uncle is a first cousin of Giridhar. The puzzle then checks if cousin appears among the options. It does not, so you must recognise that none of the offered labels exactly describes a cousin relation, and therefore none of these is the correct answer among the options.

Step-by-Step Solution:
Step 1: Giridhar's mother's husband is simply Giridhar's father.Step 2: The father in law of Giridhar's father is the father of Giridhar's mother, that is, the maternal grandfather.Step 3: The son of that maternal grandfather is a male child of the same elder, so he is the maternal uncle of Giridhar.Step 4: The daughter of this maternal uncle is the daughter of Giridhar's maternal uncle.Step 5: A daughter of an uncle (maternal or paternal) is a cousin of Giridhar.Step 6: So the final girl is Giridhar's cousin.

Verification / Alternative check:
Draw a family tree: at the top, the maternal grandfather. Under him two children: Giridhar's mother and Giridhar's maternal uncle. Under the mother, place Giridhar. Under the uncle, place his daughter. The relation between Giridhar and the girl is clearly cousin. Now check the options: sister, wife, niece and none of these, plus cousin in option e in this improved version. Since the intended original option list did not have cousin, the logically correct choice among the initial four would be none of these.

Why Other Options Are Wrong:
Sister would require both to share the same parents, which they do not.Wife reverses the relation and implies a marriage, which is never mentioned.Niece would make Giridhar an uncle, but the chain shows that the girl is a child of Giridhar's uncle, not of Giridhar's sibling.

Common Pitfalls:
Because the chain is long, many test takers lose track and pick a familiar term like sister or niece without fully confirming the intermediate steps. Others mistakenly treat father in law of my father as my paternal grandfather, which is wrong; it is actually the maternal grandfather. To avoid such errors, write each transformation explicitly: mother's husband, that man's father in law, that man's son, and finally that person's daughter.

Final Answer:
The girl is actually Giridhar's cousin, so among the main four options the correct choice is None of these.