The project manager is running a project with a distributed team, fixed budget, and tight deadlines. Knowing that they're adapting a predictive approach, what should the project manager do to avoid any scope creep and keep their team focused on delivering a product that meets requirements?

a$.$ Ask the project team to skip small requirements so that they can only focus on big and important ones.

b$.$ Ensure that all alterations to the scope are authorized through a formal process.

c$.$ Prevent stakeholders from directly interacting with the project team.

d$.$ Scope creep cannot be avoided in a predictive project; therefore, the project manager should adopt an agile approach instead.