One way to leverage project audits to ensure that projects deliver on their value proposition is to logically organize a project into a number of sequential phases. At the end of each phase, an evaluation of the project determines whether the project should proceed, should be recycled $($i$.$e$.,$ the current stage repeated$),$ or should be terminated. This is known as $\_\_\_\_\_\_.$

A$.$ project auditing

B$.$ taking a stage$-$gate $($also known as toll$-$gate or phase$-$gate$)$ approach

C$.$ project reserve analysis

D$.$ conducting performance assessments for project team members