Veena who is the sister-in-law of Ashok, is the daughter-in-law of Kalyani.…

Concept

In a blood-relations puzzle, a relational term such as "sister-in-law" can mean brother's wife, husband's sister, or wife's sister — the correct reading is whichever one lets every given clue lock together into a single consistent family tree; a reading that leaves a person's clue disconnected from the rest of the family is discarded. Once every term is resolved this way, if the exact relation that emerges does not match any specific term offered as an option, the correct choice is "None of these" rather than the nearest-sounding label.

Step-by-step

1. Dheeraj is the father of Sudeep, and Sudeep is stated to be the only brother of Ashok — with no step-family mentioned anywhere in the puzzle, Ashok and Sudeep are read as full brothers, both sons of Dheeraj.

2. Veena is called the sister-in-law of Ashok. If this meant "wife's sister", Veena's marriage into Kalyani's family would say nothing about Kalyani's link to Ashok, since her husband would have no stated connection to Dheeraj, Sudeep, or Ashok at all, leaving no way to relate Kalyani to Ashok from the given facts. Reading it as "brother's wife" is what makes the puzzle solvable: since Ashok's only brother is Sudeep, Veena being Ashok's sister-in-law in this sense means she is married to Sudeep.

3. Veena is also the daughter-in-law of Kalyani, meaning Veena is married to one of Kalyani's sons. Combining this with the previous step, that son is Sudeep.

4. Since Sudeep is Kalyani's son, and Sudeep and Ashok are brothers sharing the same parents, Kalyani is also Ashok's mother.

Cross-check

Running the chain the other way confirms it: Sudeep's father is Dheeraj, and Sudeep's mother is now placed as Kalyani, so Dheeraj and Kalyani are husband and wife, with Ashok and Sudeep as their two sons — exactly consistent with "Sudeep is the only brother of Ashok."

Result

The exact relation of Kalyani to Ashok is that of mother. Since "Mother" is not among the listed options (Mother-in-law, Aunt, Wife), the correct choice is "None of these".