Final answer:
Surgical masks and N95 respirators were the types of masks proven to be effective against COVID-19 and prescribed across the globe. They offered better protection compared to cloth masks, with N95 respirators filtering at least 95% of airborne particles. Therefore correct option is D
Step-by-step explanation:
During the COVID-19 pandemic, various types of masks were used globally to mitigate the spread of the virus. The masks proven to be effective against COVID and prescribed throughout the world include B) Surgical masks and C) N95 respirators. Cloth masks were also widely used, especially during the early stages of the pandemic when there was a shortage of medical-grade masks.
Surgical masks are designed to protect against large droplets, splashes, or sprays of bodily fluids, while N95 respirators are designed to achieve a very close facial fit and very efficient filtration of airborne particles. The 'N95' designation means that when subjected to careful testing, the respirator blocks at least 95 percent of very small (0.3 micron) test particles. As the pandemic evolved, the preferences for masks shifted towards these higher-grade options for better protection, especially in healthcare settings and areas with high transmission rates.
It's important to note that mask use, along with other preventive measures like hand hygiene and physical distancing, was a topic of some contention. People's attitudes towards mask mandates sometimes mirrored their political beliefs regarding personal liberties.