When may a high power rocket be launched?

The correct answer emphasizes the importance of safety and communication protocols in high power rocketry. Launching a high power rocket involves inherent risks, and the safety monitor plays a critical role in overseeing the launch process. This individual is tasked with ensuring that all safety procedures are followed, and they have the authority to halt a launch if conditions are deemed unsafe.

By requiring both permission and attention from the safety monitor before launching, this option emphasizes a structured approach to safety management. It reflects the principle that communication and safety oversight are paramount in rocketry activities, especially with high power systems that can present unique hazards compared to lower power rockets.

Options focusing solely on daylight hours, permission from the launch site owner, or the clarity of the launch site do not encompass the comprehensive safety measures necessary for high power rocket launches. While those factors may contribute to a successful launch environment, they do not include the crucial aspect of the safety monitor's role in ensuring participant safety and enforcing safety protocols.