The correct answer is D. All the above.
Asbestos is a naturally occurring mineral that is resistant to heat, fire, and electricity. It is often used in insulation, roofing, and fireproofing materials. However, asbestos fibers can be harmful to human health if they are inhaled. Exposure to asbestos can cause asbestosis, a serious lung disease. It can also cause cancer, including mesothelioma, lung cancer, and laryngeal cancer.
Asbestos is an excellent insulator for heat and electricity. It is also fire-proof and acid proof. Asbestos has a specific gravity of 3.10.
Asbestos was widely used in construction and industry until the 1970s, when the health risks associated with asbestos exposure became known. Today, the use of asbestos is strictly regulated in many countries.