Step 1: Understanding the Question:
We need to map out the family tree of Vinod, Bhaskar, Manohar, Biswal, and Preetam to find the uncle of Biswal.
Step 2: Detailed Explanation:
Sibling Set: Vinod (Male), Bhaskar, and Manohar (Female) are siblings.
Parental Link: Preetam is the daughter of Bhaskar.
Sibling Link: Biswal is the brother of Preetam. This means both Biswal and Preetam are the children of Bhaskar.
Finding the Uncle: The uncle of a person is their father's brother or mother's brother.
- Biswal's father is Bhaskar.
- Bhaskar's brother is Vinod.
- Therefore, Vinod is Biswal's paternal uncle.
Eliminating Options:
- Bhaskar is the father.
- Manohar is the aunt.
- Preetam is the sister.
Step 3: Final Answer:
Vinod is the brother of Biswal's father (Bhaskar), hence Vinod is the uncle. Option (D) is correct.