The correct answer is: a) with the right technology, economic resources and political determination, we can protect the future of water.
Indeed, the excerpt mentions a technological device to collect water from fog and thus avoid overloading the regular water distribution system. It also mentions how the State of Israel which is far more arid than South Africa and yet manages to dispose of abundant water and rarely or never experiences shortages has implemented new collection methods that allow the reuse of 86 of the water that goes down the drains.
The economic resources are necessary for the research that will yield the innovative technologies and methods that will make the recollection and reuse of water more efficient. The new technology will give the government new effective choices to implement such measure and its political determination against conformism and/or vested interests will ultimately make such changes possible.