According to the PMBOK® Guide, specifically within the Define Activities process of Project Schedule Management, the technique described is Rolling Wave Planning.

Definition: Rolling wave planning is an iterative planning technique in which the work to be accomplished in the near term is planned in detail, while the work in the future is planned at a higher level.

Application: It is a form of progressive elaboration applicable to work packages, planning packages, and release planning when using agile or waterfall methodologies. As the project progresses and more information becomes available, the " wave " rolls forward, and work that was previously planned at a high level (the future) is decomposed into detailed activities as it approaches the near-term horizon.

Purpose: This approach allows the project team to start work on immediate tasks without waiting for every detail of the long-term project to be known, which is particularly useful in environments with high uncertainty or evolving requirements.

Choice A (Finish-to-start planning) is a logical relationship used in sequence activities, not a planning approach for detail levels.

Choice C (Short term planning) is a general business term but is not the specific PMI technical term for this progressive elaboration technique.

Choice D (Dependency determination) refers to the process of identifying the relationship between activities (Mandatory, Discretionary, External, Internal), not the depth of the planning horizon.