During a design workshop, the engineers ask the project manager about the safety prerequisites for...

Enterprise Environmental Factors (EEFs) include governmental regulations, safety standards, organizational culture, legal requirements, and industry standards. Since the engineers are asking about safety prerequisites—typically defined by regulatory or compliance bodies—the project manager should refer to EEFs, which contain mandatory information regarding safety policies.

According to the PMBOK® Guide – Seventh Edition (Environment Domain), EEFs are inputs that influence project success and must be considered when defining requirements like safety.

Option B (benchmarking) helps improve performance but doesn ' t ensure compliance with formal safety standards.

Option C (lessons learned) provides past project insights but may not reflect updated safety prerequisites.

Option D (hiring an expert) may be unnecessary if the relevant safety standards are already documented in EEFs.