Who may give orders concerning the investigation of a homicide or suspicious death?

The Troop Major of jurisdiction is the correct answer because they hold a significant leadership role within the Massachusetts State Police and are responsible for overseeing operations, including investigations, within their specific jurisdiction. The Troop Major has the authority to coordinate resources, assign personnel, and provide direction during complex investigations such as homicides or suspicious deaths. This position ensures that investigations are managed effectively, with the appropriate strategies and protocols adhered to, ensuring the integrity of the investigative process.

In contrast, while the Chief of the Department is the overall leader, their involvement in every specific case is typically more strategic and high-level, rather than directly managing day-to-day investigations. Any officer on duty does not possess the authority to issue orders concerning serious investigations unless specifically directed by a superior. The Governor's office generally does not involve itself in the operational aspects of individual investigations, focusing instead on broader governmental issues and policies.