Answer:
C) Mantain the facility and equipment.
Step-by-step explanation:
Based on Mary´s, Joe´s and Sam´s activities we can conclude that they are clearly maintaining the facility and all the equipment.
This is a really important step to keep on mind, since the best way to prevent an unexpected unusual event, is basically not allowing it to reach a determined level of gravity or consideration. Start to act when the ¨danger¨ is still ¨hatching¨, and not when it´s already considered an emergency or important incident.
This way, it´s more probable to avoid different risks that could be generated if these activities were not done in an effective and timely manner by the people designed for the labor.