Which senses are acceptable for use in hazardous materials detection?

Answer: C — Vision and hearing

When identifying hazardous materials, utilizing the correct senses is essential for safety and effective detection. Vision and hearing are acceptable senses for this task. Vision allows personnel to observe visual indicators of hazardous materials, such as labels, color changes, leaks, or spills that might signal a hazard. Hearing can also be critical, as certain hazards may produce sounds—like hissing from a gas leak or unusual noises from equipment—that can indicate the presence of dangerous materials. The other options include using taste and touch, which are generally not safe practices in hazardous materials detection. Touching a substance may expose an individual to dangerous chemicals, and tasting is extremely unsafe, as it can lead to serious health risks. Smell alone can be deceptive, as not all hazardous materials have a detectable odor, and relying on it may lead to serious consequences if an individual misidentifies a hazardous situation. Therefore, the combination of vision and hearing is the best practice for safely detecting hazardous materials.