The anatomical structure depicted in the image includes multiple boundaries associated with the listed options. These are the boundaries:
- Extensor pollicis longus: This muscle is part of the anatomical snuffbox's boundaries and serves as a prominent landmark in the wrist and hand anatomy.
- Abductor pollicis longus: Another muscle within the anatomical snuffbox, involved in thumb movement, and forms part of the lateral boundary of this structure.
- Styloid process of the radius: This bony projection serves as a critical point of attachment for various tendons and ligaments, defining part of the radial boundary in the wrist region.
Given that all these structures contribute to defining the anatomical area in question, the correct choice for the boundaries depicted in the image is
All of the above.