Final answer:
Deliveries requiring a signature cannot be left unattended unless there have been arrangements made with the delivery company or recipient has provided specific instructions allowing such a delivery.
Step-by-step explanation:
Deliveries that require a signature cannot typically be left unattended. The correct answer to the question is b) Cannot. The purpose of requiring a signature is to ensure that the package is handed over directly to the recipient or an authorized individual. This provides proof that the package has been delivered and received. However, there are circumstances under which a delivery might be left unattended. For example, if the recipient has previously arranged with the delivery company to leave a package without a signature or has provided specific instructions for delivery. In such cases, the action would depend on the recipient's instructions or the delivery company's policy allowing for such arrangements. The most accurate response would be c) Depends on the delivery company policy and d) Depends on the recipient's instructions.