Final answer:
An improvement in technology that reduces the cost of production will cause an increase in supply of laptops. This can be shown as a rightward shift in the supply curve.
Step-by-step explanation:
An improvement in technology that reduces the cost of production will cause an increase in supply. This can be shown as a rightward shift in the supply curve. For example, if there is a technological advancement that allows laptop manufacturers to produce laptops at a lower cost, they can offer more laptops at a lower price, resulting in an increase in the supply of laptops.
On the other hand, the events mentioned in options A, B, and C do not directly impact the supply of laptops. A decrease in the number of manufacturers may reduce competition, but it does not necessarily affect the supply. Laptops becoming required for college admission may create a higher demand, but it does not directly impact the supply. More students buying laptops may lead to a higher demand, but it does not directly impact the supply.