Explanation:
Water is the most valuable resource on our planet. That’s why efficiency and quality are top priorities for the water industry. These goals are becoming increasingly difficult to achieve as the expense of providing clean water grows in many regions, while at the same time operations have to be as efficient and economical as possible. The consistent, end-to-end digitalization of plants and processes helps the water and waste water industry meet these challenges.
Rocks are made of minerals. Only a few minerals are rock forming and most rock is made from a combination of the commonest of these such as feldspars, quartz, mica, olivine, calcite, pyroxene and amphiboles.
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I believe it is B due to elimination of the other options. Option A water is important to all organisms not just some. Option C not all organisms can obtain water through food. Option D plants cells are affected when water sources are less. Therefore I believe that option B is the one I would go with.