Which statement best describes the advantage and trade-off of two-person verification in maintenance tasks?

Which statement best describes the advantage and trade-off of two-person verification in maintenance tasks?

• A. Reduces time and costs; eliminates need for supervision.
• B. Only necessary for electrical work; not for mechanical.
• C. Guarantees zero mistakes; eliminates training.
• D. Increases safety and accuracy; reduces risk of missing issues; may slow down work and require coordination.

Answer: (D)