The correct answer is option B, that is, many canaliculi.
The fundamental unit of a compact bone is an osteon that is also called a Haversian system. The Haversian system exhibits a cylindrical composition, which comprises of four components, that is, the Haversian canal, lamellae, lacunae, and canaliculi.
The lacunae are associated together with the help of minute channels known as canaliculi. The canaliculi offer passages through which nutrients can reach the osteocytes and waste components can leave them.