The correct answer is - D. It was the first officially recognized case of the industrial pollution of seawater.
The Minamata disaster, or more often referred to as Minamata disease, was discovered in Japan, in the city if Minamata, in the year of 1956. It was practically a heavy pollution of the seawater caused by the Chisso factory, which was releasing methylmercury through its wastewater. The people, through eating sea food were getting diseased and very dying, and the same happened to the animals as well. The pollution was extending over a period of 36 years, from 1932 to 1968 until it was finally stopped.
