Answer:
A.
Explanation:
An improve in technology will allow firms to produce in an effective way therefore, with the same resources, firms will produce more units. This will cause an increase in total supply: at the same price, firms will offer more units. In this case, at prices $1, $2, $3, $4 and $5 the new quantities will be 6,8,10,12. In the demand and supply graph, this looks as shift to the right of the supply curve (figure attached).
It is not option B because the problem says increase in quantities "at these prices". It is not option C because an increase in taxes will increase costs of production, thus firms will decrease units of production. It is not option D because changes in income will affect demand.
