The extent to which planned activities are realized and planned results achieved is known as ______.

The term that best describes the extent to which planned activities are realized and the intended results are achieved is "effectiveness." Effectiveness is a measure of how well specific objectives and goals are met within an organization's operations or programs. It indicates the success of initiatives in delivering the desired outcomes and ensuring that resources are used efficiently to achieve those outcomes.

In the context of environmental management, effectiveness can encompass various aspects, including the success of implemented policies, programs, or practices aimed at environmental preservation, compliance with regulations, or improvement in sustainability indicators. By evaluating effectiveness, organizations can identify areas for improvement and adjust their strategies to enhance outcomes.

Other options like policy, consultation, and guidance do not directly relate to the measurement of success in achieving planned results. Policy refers to the principles and guidelines that govern decision-making but does not imply whether those decisions lead to successful outcomes. Consultation refers to the process of seeking input or feedback from stakeholders, which can contribute to planning but is not a measure of success itself. Guidance involves advising or directing actions based on best practices or legal requirements, but again, it does not directly measure achievement of results.