Which of the following is essential for maintaining safety during oil delivery?

Complying with safety training is essential for maintaining safety during oil delivery because it equips personnel with the necessary knowledge and skills to handle equipment, respond to emergencies, and follow industry regulations effectively. Safety training typically covers various protocols, including proper handling of oil, understanding hazardous materials, awareness of potential risks, and safe driving practices. This training reduces the likelihood of accidents and ensures that everyone involved understands their responsibilities and how to work safely.

In contrast, the other options undermine safety. Ignoring safety protocols can lead to accidents, while avoiding communication with clients can result in misunderstandings that may compromise safety. Practicing without supervision can also lead to unsafe practices going uncorrected, further increasing the risk during delivery operations. Therefore, compliance with safety training is the foundation of a safe working environment in oil delivery.