Correct Answer - Option 2 : Sanju
From the given information,
1) Rohan was ranked lower than Sanju.
Rohan < Sanju
2) Vishal was ranked just higher than Disha.
Vishal > Disha
3) Kiran’s rank was between Rohan and Vishal.
Case 1: Rohan > Kiran > Vishal
Case 2: Vishal > Kiran > Rohan
According to statements 1) and 2), eliminate case 2.
Sanju > Rohan > Kiran > Vishal > Disha.
Hence, Sanju is the highest rank.