Final answer:
Sanding, sawing, cutting, or grinding masonry materials typically produce hazardous dust, which can pose significant respiratory health risks, including silicosis, COPD, and an increased risk for lung cancer.
Step-by-step explanation:
Sanding, sawing, cutting, or grinding masonry materials can often produce hazardous dust. This dust can contain silica, which, when inhaled, can lead to respiratory diseases such as silicosis.
The prolonged exposure to such dust can also exacerbate or cause chronic obstructive pulmonary diseases (COPD) and increase the risk for lung cancer.
As noted in case studies, working with materials such as dry sanding lead paint can release toxic lead dust into the environment, becoming a potent source of contamination, especially dangerous for children who are more susceptible to lead poisoning.
Moreover, construction and manufacturing settings often report injuries and health risks like hearing loss due to loud noises and respiratory issues caused by inhaling hazardous substances or fine particulates.
Sanding, sawing, cutting, or grinding masonry materials can often produce hazardous dust. These activities can generate tiny particles of dust that can be inhaled, causing respiratory problems. The dust can contain harmful substances such as silica, which can lead to lung diseases like silicosis or lung cancer.
Therefore correct option is C .Hazardous dust