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Which asbestos fact is correct?
Friable asbestos is safer than non-friable asbestos
Asbestos is considered a material defect because it can be observed with the naked eye
Asbestos offers excellent thermal insulation properties
Only significant quantities of asbestos fibers in the air pose a health risk
Asbestos is no longer a concern in modern construction
All forms of asbestos are equally harmless
The correct answer is: Asbestos offers excellent thermal insulation properties
Asbestos offers excellent thermal insulation properties, which is why it was commonly used in construction in the past. However, this does not mean that it is safe. In fact, asbestos fibers are hazardous and can cause serious health issues such as lung cancer and mesothelioma. Option A is incorrect because both friable and non-friable asbestos can release fibers into the air if disturbed. Option B is incorrect because asbestos is not always visible and may require specialized testing to detect. Option D is incorrect because even small amounts of asbestos fibers can be dangerous to one's health. Option E is incorrect because asbestos-containing materials may still be present in older buildings and require proper removal and abatement processes. Option F is incorrect because all forms of asbestos, including chrysotile (white), amosite (brown), and crocidolite (blue), have been identified as carcinogens by the World Health Organization.