Answer:
B.
Step-by-step explanation:
The visitor sign-in sheet is used to keep record of who has entered and left the premises. During fire evacuation, it is important for company's Fire Warden to have the visitor sign-in sheet.
The vistor sign-in sheet will help the Fire Warden to tally if all people have been evacuated from the premises. After assembling at the meeting point, the Fire Wardens account for evacuated visitors from the sign-in sheet to know that everyone has been safely evacuated from the premises and no one is left behind in the premises.
Therefore, option B is correct.