Which objective should be attainable within a given timeframe?

A time-based objective is an objective that should be attainable within a given timeframe. Time-based objectives help to ensure that the organization is taking timely and realistic actions to achieve its desired outcomes and performance. Time-based objectives also help to monitor and measure the progress and results of the actions, as well as to identify and address any delays or deviations. Time-based objectives are one of the characteristics of the S.M.A.R.T. concept, which stands for Specific, Measurable, Achievable, Relevant, and Time-based. The S.M.A.R.T. concept is a useful tool for setting effective objectives that are clear, realistic, and meaningful. The S.M.A.R.T. concept is applicable to various types of objectives, such as business continuity objectives, recovery time objectives, recovery point objectives, minimum business continuity objectives, etc. According to the ISO 22301 Auditing eBook, "Time-bound: BCOs [Business Continuity Objectives] should be time-bound, with clear deadlines and timelines for achieving the objectives. This ensures that the organization is taking timely action to protect critical business functions during a disruptive incident."1 References:

ISO 22301 Auditing eBook, Chapter 2: Business Continuity Concepts and Principles, Section 2.3: Business Impact Analysis2

How to set ISO 22301 Business Continuity Objectives - Advisera1

What is the Plan-Do-Check-Act (PDCA) Cycle?3