Final answer:
D. The price of laptop computers rises.
Step-by-step explanation:
The question asks about factors that would decrease the supply of laptop computers. This can be understood within the concept of supply and demand in economics.
An increase in the cost of inputs (plastics), removal of a subsidy, or introduction of less efficient manufacturing technology can lead to a decrease in supply. On the other hand, an increase in the number of sellers typically increases supply, while an increase in price is a reaction to shifts in supply and demand, not a cause of supply changes.
- Options A (rising cost of plastic), B (removal of government subsidy), and E (use of less efficient manufacturing technology) could lead to a decrease in the supply of laptop computers. Option C would typically increase supply, and option D is a result of changes in supply and demand.
Therefore, options A, B, and E are factors that could decrease the supply of laptop computers.