Answer:
b. Cannot tell the change in equilibrium quantity. The equilibrium price will decrease
Explanation:
Two things are going on here
1. Income decreases, that will shift demand inwards. People can buy fewer goods at any given price
2. New technology is discovered, that shifts supply outwards. Costs are reduced so producers can produce more at a given price
The resulting effects are that price will decrease but the result in quantity is undetermined. This can be seen with the two examples attached. In both cases, the shifting of the curves from D0->D1 and S0->S1 results in lower prices. However, in one case the equilibrium quantity goes up and in the other goes up.
