What is true about medical oxygen compared to industrial oxygen?

Medical oxygen is specifically regulated by the FDA to ensure it meets stringent safety and purity standards for human use. This regulation is critical because medical oxygen is often used in healthcare settings to treat patients with various medical conditions, requiring a high degree of purity to avoid any potential adverse effects that could arise from impurities.

In contrast, industrial oxygen is used for applications like welding or manufacturing and may not adhere to the same rigorous standards. It could contain various impurities that are acceptable for industrial use but would be harmful if inhaled by a patient. Thus, the distinction related to regulation underscores the safety and suitability of medical oxygen for therapeutic purposes, which is why this choice is correct.