Answer:
D) The discovery of oil reserves has resulted in a rightward shift of the long-run aggregate supply curve.
Step-by-step explanation:
Since the discovery of oil, Almora's gross domestic product will start to grow (both nominal and real GDP). Since the aggregate supply exceeds the real GDP, it is reasonable to expect that the GDP will continue its expansion for several years. The only factor that can diminish economic expectations is that inflation increases so much that it will end up hurting the economy.
Having huge oil reserves doesn't mean that the standard of living has improved. Just look at Qatar, United Arab Emirates, Saudi Arabia, etc. The populations of these countries is either extremely rich or very poor. Or we can look at Venezuela and realize that everyone that doesn't work for the government is poor.
This scenario usually repeats in countries that rely only on natural resources.