WHAT IS THE MAIN IDEA OF THE PASSAGE

70. What is the main idea of the passage?B. Alfred Nobel created awards in sixA. Alfred Nobel became very rich whenhe invented dynamite.categories for contributions to humanity.C. Alfred Nobel made lastingD. Alfred Nobel left all his money tocontribution to humanity.science.IV. Read the passage and choose the best option A, B, C or D to answer thequestion (1 pt) One of the most urgent environmental problems in the world today is theshortage of clean water. Having clean drinking water is a basic human right. But acidrain, industrial pollution and garbage have made many sources of water undrinkable.Lakes, reservoirs and even entire seas have become vast pools of poison. Lake Baikalin Russia is one of the largest lakes in the world. It contains a rich variety of animalsand plants, including 1,300 rare species that do not exist anywhere else in the world.But they are being destroyed by the massive volumes of industrial wastes which pourinto the lake every day. Even where law existed, the government did not have thepower to enforce them. Most industries simply ignores the regulations. TheMediterranean Sea occupies 1% of the world’s water surface. But it is the dumpingground for 50% of all marine pollution. Almost 16 countries regularly throwindustrial wastes a few miles off shore.Water is free to everyone. A few years ago people thought that the supply ofclean water in the world was limitless. Today, many water supplies have been ruinedby pollution and sewage. Clean water is now scarce, and we are at last beginning torespect this precious source. We should do something now.