Answer:
a, and c
Explanation:
Shift in demand is usually as a result of the following; changing tastes or preferences of consumers
, changing income levels
, expectations about future prices
.
A documentary touting the benefits of solar power may influence consumers which will change their preferences and cause them to opt more for solar power.
An increase in the price of coal power will cause an increase in the demand for an alternative such as solar power resulting in rightward shift in demand for solar power.
