Question

in a wbs, which type of package is the lowest level of a work breakdown structure for which cost and duration are managed? phase deliverable planning work

Explanation:

A Work Breakdown Structure (WBS) breaks project work into hierarchical components. The lowest level where cost and duration are managed is the work package, referred to here as "Work". Phases are high-level project divisions, deliverables are the end outputs, and planning is a project process, not the managed lowest WBS package.

Answer:

Work