Unilateral undescended around ?
Ans. is 'c' i.e., 12 months of age "Definitive treatment of the undescended testis should occur before I year of age". - Cambell Urology Sabiston also suppos the above statement (Note Bailey writes completely different timing for orchipexy, so don't follow it.)
2 months of age
6 months of age
12 months of age
14 months of age