What tool or technique involves breaking down project work into smaller components in the Define Activities process?

The option that correctly identifies the tool or technique used to break down project work into smaller components during the Define Activities process is decomposition. This method is essential in project management as it allows teams to take a large, complex project and subdivide it into more manageable parts. By doing so, each smaller component can be more easily assessed, planned, and monitored, ultimately leading to a clearer understanding of the project's scope and the specific activities required to achieve the overall objectives.

Decomposition not only helps in clarifying what needs to be done but also assists in estimating the resources, time, and costs associated with each component. This structured breakdown enhances communication and provides a basis for planning and executing the work effectively. Other techniques mentioned, such as expert judgment and rolling wave planning, serve different purposes within project management and are not focused specifically on decomposing project work into smaller parts. Templates may streamline documentation but do not fundamentally relate to the process of breaking down project tasks.