Step 1: Understanding the Concept:
Map the family tree using the sibling and marriage links provided.
Step 2: Identifying the Vector of Change:
- Sudeep is the only brother of Ashok.
- Dheeraj is the father of Sudeep (and therefore the father of Ashok).
- Veena is the sister-in-law of Ashok and the daughter-in-law of Kalyani.
Step 3: Calculation:
- Since Sudeep is Ashok's only brother, Veena must be Sudeep's wife (making her Ashok's sister-in-law).
- If Veena is the daughter-in-law of Kalyani, Kalyani must be the mother or father of Sudeep.
- We already know Dheeraj is the father. Therefore, Kalyani must be the mother.
Step 4: Final Answer:
Kalyani is the mother of Ashok. Thus, the correct option is (c).