What parent object is capable of having child objects within the system?

The correct answer is Portfolio. In Adobe Workfront, a Portfolio is a higher-level organizational structure that can include multiple projects underneath it. This capability allows an organization to manage a collection of projects that align with strategic objectives, making it easier to track overall performance and resource allocation across all related projects.

Projects are the next level down and can have tasks and issues associated with them, but they do not encompass other projects or portfolios. Issues are specific problems related to tasks or projects, and tasks are individual units of work that make up a project. Neither of these can have child objects in the way that portfolios and projects do. Thus, the structure of Portfolio as a parent object facilitates better oversight and management of the collection of projects and their execution in alignment with broader goals.