Senior executives within a company have noticed an increasing number of projects failing to deliver to requirements. Which of the following project governance methods will help to meet this need?

Phase gate approval, also known as stage-gate reviews, involves formal reviews at the end of each project phase to evaluate project performance, assess adherence to requirements, and make go/no-go decisions before advancing, thus preventing projects from progressing if they are failing to deliver.

Project phase transition refers to the act of moving between project phases, which is a process but not a governance method specifically designed to enforce requirements and prevent delivery failures.

ISO standards compliance ensures adherence to internationally recognized standards, which are broader quality or process frameworks, not a direct project governance method for preventing individual project delivery failures.

An audit trail provides a record of project activities and decisions for accountability and review, but it is a tool for recording, not a proactive governance method to prevent failures from occurring.