Although iran is larger than turkey both countries have similar populations why might this be so?

Their proximity to each other have given them some similar topography; i.e. both countries posses considerable amount of mountains and are subject to frequent earthquakes, which have cost each country with substantial amount of deaths.  Similarly, both Turkey and Iran posses a diversity of climate conditions.  Even though Iran is twice as big as Turkey, the latter has slightly higher population.  While Turkey is one of the world’s few self-sufficient in basic food, Iran is among the world’s leaders in its reserves of oil and natural gas

The correct answer is (a.) in the coming years, the reyes family will save money because solar power requires little maintenance, and the energy used is free.

Which figures are you talking about?