The correct options c) is profit expectations on investment projects.
The aggregate supply curve (SRAS) shows the relationship between the price level and the quantity of goods and services that a country can produce and supply in the short run. It slopes upward because as the price level increases,
firms are willing to produce more goods and services because they can earn higher profits. However, a change in profit expectations on investment projects can shift the SRAS curve. If firms expect higher future profits,
On the other hand, if firms expect lower future profits, they will be less willing to invest and hire, which will reduce their ability to produce goods and services in the future. This will shift the SRAS curve to the left. Therefore, a change in profit expectations on investment projects is one of the factors that can shift the SRAS curve in the short run.