Question

compact bone is organized into bony units called... osteons haversian canals spongy bones articular cartilages

Explanation:

Compact bone is made up of bony units called osteons. Osteons are the structural units of compact bone, containing concentric layers of bone matrix and a central Haversian canal. Haversian canals are part of the osteon structure, not the bony units themselves. Spongy bones are a different type of bone tissue. Articular cartilages are found at the ends of bones and are not the units of compact bone.

Answer:

Osteons