What safety measures are implemented during the production stage?

The selection of system safety assessment and certification as the correct answer underscores the critical role that rigorous assessment and validation play during the production stage of a system's lifecycle. This process involves examining the system’s design and operational characteristics to ensure that it meets established safety standards and requirements before being put into operation.

During production, safety assessments help identify and mitigate potential hazards associated with the system, providing assurance that risks are controlled and compliance with regulatory requirements is achieved. Certification confirms that safety measures are effectively integrated into the system's production processes, ensuring a reliable and safe product outcome. This stage is crucial because it not only affects the immediate safety of the system but also impacts its long-term operational reliability.

Other safety measures like establishing safety objectives, maintaining a safety baseline, and conducting initial hazard analysis are indeed important and may occur during different stages of the system lifecycle. However, they do not specifically encapsulate the comprehensive evaluation and certification processes that are vital in the production stage to ensure the system's safety standards are thoroughly verified.