Explanation:

- Let’s break down the statement: “Your mother’s husband’s sister is my aunt.”

- The woman’s mother’s husband is her father.

- Her father’s sister is her aunt.

- The man says this woman’s aunt (her father’s sister) is *his* aunt too.

- This means the man’s parent (probably father or mother) is a sibling of the woman’s father.

- So, the man and woman share the same set of grandparents.

- Therefore, they are siblings.

Option explanations:

- Option 1 (granddaughter) – Doesn't fit the relationships.

- Option 2 (daughter) – The woman is not described as the man's daughter.

- Option 3 (sister) – Correct. They could be brother and sister.

- Option 4 (aunt) – Doesn’t fit the relationship.

Correct Answer:

Option 3 — sister