Haversian canals are connected to each other via
Haversian canal.
Volkmann’s Canal.
Lacunae
Lamellae
Haversian canals are the channels found in compact bone that contain blood vessels, nerves and connective tissue. These Haversian canals are interconnected with each other through smaller channels called Volkmann's canals (also known as perforating canals). Volkmann's canals run perpendicular to the long axis of the bone and connect multiple Haversian canals together, allowing for the exchange of blood vessels and nerves between them. Hence, the correct answer is option 2.