Explanation:
The correct option is 'b'. The scaphoid is the most commonly fractured carpal bone, accounting for 60-70% of all carpal fractures. It spans the proximal and distal carpal rows, making it vulnerable during forceful wrist hyperextension (FOOSH). Due to its tenuous retrograde blood supply, waist and proximal pole fractures are at high risk for avascular necrosis.

Reference: Rhemrev SJ, et al. Current methods of diagnosis and treatment of scaphoid fractures. Int J Emerg Med. 2011;4:4.