Correct Answer - Option 2 : Salim
From the given information,
1. Veni is a year older than Smith.
Veni > Smith
2. Smith is two years older than Salim.
Veni > Smith > Salim
3. Raju is an year older than Salim. ⇒ Raju is one year younger than Smith.
Veni > Smith > Raju > Salim
So, the final arrangement according to their ages is
Veni > Smith > Raju > Salim
So, Salim is the youngest of all.
Hence, the correct answer is "Salim".