Exam PMP topic 1 question 1334 discussion

A project manager is working on a project to build a manufacturing complex. The project will run in three different phases: engineering, procurement, and construction. The procurement phase is in the initiation stage. The project sponsor wants to pursue the project phases as they have been planned, but also wants to accommodate and adjust to new data, input from the customer, and changes during the various phases as the project progresses.

How should the project manager approach this project?