Explanation:
The correct option is 'b'. In young adults, a displaced femoral neck fracture is considered an orthopedic emergency. Early anatomical reduction and stable internal fixation, ideally within 24 hours (and often advocated within 6-12 hours if physiologically stable), is critical to decompress the intracapsular hematoma, restore blood supply, and minimize the risk of avascular necrosis (AVN) and nonunion. Delaying surgery significantly increases these complication rates.

Reference: Fligor VN, et al. The Impact of Surgical Delay on Complications in Young Adults with Femoral Neck Fractures. J Orthop Trauma. 2021;35(10):e355-e361.