What is the primary purpose of properly labeling containers?

Properly labeling containers serves the primary purpose of providing information about their contents. This is crucial for a variety of reasons, including safety, compliance with regulations, and ensuring proper handling. Labels can indicate the type of substance, any hazards associated with it, storage requirements, and usage instructions, thereby ensuring that those who interact with the containers can do so safely and effectively. Clear labeling can also help prevent mix-ups and accidents, making it an essential practice in many settings, particularly in laboratories, food services, and chemical storage.

Although the other options might have some relevance in specific contexts, they do not address the core function of labels, which is to give clear and relevant information about what is inside the container. Neatness and aesthetics, while they can be part of labeling, are secondary to the primary goal of conveying essential information.