Answer: Reducing energy use to extend the time we can use fossil fuels. I hope this helps out!!! :)
<span>The concentration of many people into the small area, for example, A city lowers the overall footprint of the population in the region.
Any pollution which results from people in a city can be isolated and treated more easily even than when people are being dispersed widely.
Many cities outlined suburbs to have a lower concentration of people because it can complicate public transport and provision of services. </span>
Answer is C Anaguzman is right i was wrong so i put up this so as not to confuse anyone.
