Regarding inhalants, what precaution should be taken?

The correct choice emphasizes that avoiding animal contact with the liquid form of inhalants is crucial due to the potential harmful effects that these substances can have if absorbed through the skin or ingested. Liquid inhalants can pose significant risks, including irritation or toxicity, which may adversely affect the health of the animal subjects in research settings. Proper handling and ensuring that animals do not come into contact with the liquid form are fundamental precautions to protect their wellbeing and maintain the integrity of study results.

Other options, while addressing different aspects of safety, do not reflect the most pressing concern regarding direct harm to animals associated with liquid inhalants. Some may suggest that minimal precautions are sufficient or address conditions that could be managed with lesser restrictions, but they do not prioritize the direct interaction or exposure risk that is critical for the safety of the animals involved in research.