Which of the following falls under the category of electrical safety?

Avoiding the use of damaged power cords is a fundamental practice in electrical safety. Damaged cords can expose individuals to electrical shock or fire risks, compromising both personal safety and the safety of the environment. Ensuring that all cords are intact and in good condition is crucial to maintaining a safe working atmosphere.

The other options are important in different contexts. Labeling hazardous chemicals is essential for chemical safety, as it helps in identifying the risks associated with those chemicals and ensures proper handling. Using chemical fume hoods is a critical practice in managing airborne contaminants and protecting individuals from inhaling toxic fumes or dust. Handling biological specimens falls under biological safety practices, which are designed to prevent exposure to infectious materials.

While all these practices are vital for safety in their respective areas, avoiding the use of damaged power cords specifically addresses the risks associated with electrical hazards, making it the correct choice for this question.