The speed of light is ______. A. 280,000 km/s B. 300,000 km/s C. 320,000 km/s D. none of these Related Read more articles Previous PostX-rays were discovered by ____. Next PostDuring winter in cold countries, the _____ is mixed to melt the ice on the icy roads. If the aforementioned Answer is Wrong. Leave a Reply with an authentic source.Cancel reply