Introducing Raveena, Nitish said, 'She is the maternal grandmother of my sister's son". How is Raveena related to Nitish?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. Mother.
In the diagram shown;
Square shows males, the circle shows females, vertical lines show generations, a single horizontal line shows brothers or sisters, and double lines show a couple.

Thus considering the figure, Raveena is the mother of Nitish.
Hence, option 4 is the correct answer.