Answer: c. Demand decreases and supply decreases.
Step-by-step explanation:
When demand for tablets decrease, the demand curve shifts to the right. The price and quantity declines. At the same time, when supply also falls, the supply curve shifts to the left leading to an increase in price and a fall in quantity.
Since, decrease in demand and supply have opposite effect on the price there is no change in the price of tablets.
Both the forces work towards reducing quantity to quantity will fall unambiguously.
Thus, the correct option is c, Demand decreases and supply decreases.