The approach to environmental management promoted by ISO 14001:2004 is best described as:

The approach to environmental management promoted by ISO 14001:2004 is best described as systematic. ISO 14001 is an international standard that outlines an effective framework for environmental management systems (EMS). It emphasizes a structured and organized method for managing environmental aspects, compliance with regulations, and continuous improvement.

A systematic approach means that organizations are encouraged to identify environmental impacts, set objectives, and establish policies that govern their operations relative to environmental management. This structured framework helps organizations plan their activities, implement procedures, and ensure that environmental considerations are integrated into their overall management processes.

In contrast, an ad-hoc approach lacks planning and organization, which can lead to inefficiencies and missed opportunities for improvement. Similarly, disorganized management does not follow a specific framework or guidelines, making it difficult for an organization to manage its environmental responsibilities effectively. A reactive approach focuses on responding to environmental issues after they arise rather than anticipating and preventing them, which is contrary to the proactive nature of ISO 14001, where organizations are encouraged to establish goals and continuously assess their performance. Therefore, the systematic nature of ISO 14001:2004 is crucial for promoting effective environmental management practices within organizations.