Which of the following best defines the term "labeling" in pest management?

Labeling in pest management primarily refers to the instructions provided for the safe and effective application of pesticides. This includes information such as dosage, method of application, safety precautions, and any environmental considerations. The label serves as a crucial guide for users, ensuring that pesticides are applied in accordance with regulatory standards and in a manner that minimizes risks to human health and the environment.

The other options, while related to the context of pest management, do not encapsulate the definition of labeling. The physical arrangement of pesticide containers does not focus on the content of the labeling itself. Legal requirements for pesticide safety are broader regulations that govern the use of pesticides but are not specifically the labeling instructions. Training manuals for pest control technicians provide educational content but are distinct from the labeling that contains application-specific information. Hence, the correct answer focuses directly on the essential role that labeling plays in guiding pesticide usage.