What is the potential hazard of mixing explosives with initiating explosives?

Mixing explosives with initiating explosives can significantly increase instability, making option A the correct choice. Initiating explosives, by their nature, are more sensitive to shock, heat, and friction compared to other types of explosives. When combined, the characteristics of initiating explosives can transfer their sensitivity to the mixture, potentially leading to unintended explosions. This unstable mixture can be particularly dangerous during handling, transport, or when subjected to environmental factors.

Other options present scenarios that do not align with the realities of working with explosives. Lowered efficacy implies that the explosives would become less effective after mixing, which is not a primary concern when it comes to the physical properties and stability of explosive compounds. Claiming that there is no hazard fails to recognize the inherent risks associated with explosives and their combinations. Lastly, the idea of a limited reaction suggests a controlled or minimized hazard, which contradicts the essential dangers posed when mixing different types of explosives, particularly those that are initiators.