Explanation:

- Let’s break down Anuj’s statement:

- "My mother’s father" = Maternal grandfather

- "My mother’s father’s son" = Mom's brother (maternal uncle) or Mom herself (if her father’s son is her)

- "My mother’s father’s son’s brother" = Again, could be the same maternal uncle or another brother

- "My mother’s father’s son’s brother’s son" = The cousin of Anuj (i.e., son of maternal uncle) or Anuj himself (if brother is mom and her son is Anuj)

- We are told Vinita (married to Kartik) is the mother of Anuj.

- Sumit, by the statement, is Anuj's cousin on the mother’s side (son of Anuj’s maternal uncle).

- Therefore, Vinita (Anuj’s mother) is Sumit’s aunt (mother’s sister).

Let's look at the options:

1. Father’s sister

2. Mother

3. Mother’s sister (CORRECT: she is Sumit’s mother’s sister)

4. Sister

Correct answer:

- Option 3: Mother’s sister