Blood relations – in-law via husband’s line: Pointing to a man, a lady said, "He is the son of my husband's daughter." How is the man related to this lady?

Introduction / Context:
The description moves from husband → husband's daughter → her son. We must determine how that boy relates to the lady.

Given Data / Assumptions:

• Lady is married to the "husband" mentioned.
• Husband's daughter could be her own daughter (biological/step), but the relation of the daughter's son to the lady is the same: grandson.

Concept / Approach:
Child of one's (step)child is a grandchild. Hence the boy is the lady's grandson.

Step-by-Step Solution:

Verification / Alternative check:
Whether the daughter is step or biological to the lady doesn't change the kinship term in these puzzles: the child of the (husband’s) daughter is still the lady's grandson.

Why Other Options Are Wrong:
Son/nephew/cousin/distant options don't match the defined line via the daughter.

Common Pitfalls:
Confusing step-relations; puzzles typically treat the in-law/step child’s child as a grandchild for the kinship term.

Final Answer:
Grandson