Final answer:
Personal protective equipment (PPE) ranks as the second line of defense in the recommended approach to hazard control.
Step-by-step explanation:
Personal protective equipment (PPE) ranks as the second line of defense in the recommended approach to hazard control. PPE includes garments, helmets, gloves, goggles, and other protective gear that workers wear to reduce their exposure to hazards in the workplace. While it is important to have physical and chemical barriers as the first line of defense, PPE serves as an additional protective measure when these barriers are breached.