Final answer:
It is false that a vendor should fill in the sign in sheet themselves; instead, a company representative should do it and then get it verified by the vendor for accuracy.
Step-by-step explanation:
The statement about giving the vendor the sign in sheet to fill in themselves is false. It is standard practice for a company employee or an authorized representative to handle the sign in sheet for the purposes of security, accuracy, and accountability. The correct process would be for the representative to fill in the necessary details on the sign in sheet and ask the vendor to verify the information for accuracy. This method ensures that there is a controlled process for recording who enters the premises and maintains the integrity of the visitor log.