Which principle should ensure that a project remains aligned with the objectives of the investing...

The principle of "Ensure continued business justification" in PRINCE2 is designed to ensure that a project remains aligned with the objectives of the investing organization(s) throughout its life. This principle requires that the business case be reviewed continually to confirm that the project remains viable and desirable in light of evolving business circumstances and objectives.References: (PRINCE2® 7 Foundation Handbook, AXELOS)