What is one of the requirements for incident objectives, regarding performance measurement?

Incident objectives must be clearly defined with a specific timeframe and measurable standards to ensure that they can be evaluated effectively. By including a timeframe, it sets a deadline for when the objectives are to be accomplished, which encourages focus and accountability. The inclusion of a standard allows for assessing whether the objectives have been met and provides a baseline against which performance can be measured. This requirement ensures that the incident management efforts are not only actionable but also quantifiable, leading to more effective responses and the ability to track progress throughout the incident.

The other options do not align with the principle of setting clear and measurable objectives. Vague definitions do not provide clarity or direction for incident responders. Prioritizing communication over action may hinder swift decision-making and operational effectiveness, deviating from the primary goal of resolving incidents efficiently. Allowing for ongoing adjustments without evaluation could lead to a lack of accountability and a failure to take stock of progress, which is essential in managing incidents effectively.