During which of the following Project Schedule Management processes does the team estimate the number of work periods that will be required to complete a schedule activity, usually expressed as workdays or work weeks

Work Breakdown Structures

Explanation:

A Work Breakdown Structure is the process of breaking down the work into smaller, more manageable components. The elements at the lowest level of the Work Breakdown Structures are called tasks.

Furthermore, A work-breakdown structure in project management and systems engineering, is a deliverable-oriented breakdown of a project into smaller components. A work breakdown structure is a key project deliverable that organizes the team's work into manageable sections.

Hence, the estimate the number of work periods that will be required to complete a schedule activity, usually expressed as workdays or work weeks, will be in a work breakdown structure.