Final answer:
A project portfolio represents a collection of all projects within an organization, aligned with its strategic objectives.
Step-by-step explanation:
A project portfolio is best defined as a collection of all projects and programs within an organization. This collection represents an organized, prioritized grouping of an organization's projects and programs aligned with its strategic objectives. In contrast to the individual tasks that might make up a single project, a portfolio encompasses the totality of an organization's projects, ensuring alignment with its overall strategic goals. An online portfolio can serve as a digital demonstration of one's skills, experiences, and accomplishments for employers to review at their convenience.