Correct Answer - Option 4 : Shyam
From the given information, Shyam is taller than Pradeep and Pradeep is as tall as Anurag.
Shyam > Pradeep = Anurag and,
Anand is shorter than Suresh, who is as tall as Anurag
Anurag = Suresh > Anand and also,
Pradeep is taller than Praveen
Pradeep > Praveen
on combining, all we get
Shyam > Pradeep > Praveen = Anurag = Suresh > Anand.
So, Shyam is the tallest among them.
Hence, option 4 is the correct answer.