Which of the following terms best describes a state of being free from germs?

The term that best describes a state of being free from germs is "sterility." Sterility signifies a complete absence of all microbial life, including bacteria, viruses, and spores. In various professional settings, especially in healthcare and cosmetology, maintaining sterility is crucial to prevent the transmission of infections and ensure client safety.

In contrast, cleanliness generally refers to the absence of dirt and visible grime but does not guarantee the elimination of pathogens. Sanitation involves reducing the number of germs to safe levels but does not achieve complete sterility. Infection refers to the state when harmful microorganisms invade and multiply within a host, which is the opposite of being free from germs. Consequently, the definition of sterility aligns directly with being entirely devoid of germs, making it the most appropriate answer in this context.