When there is "technological improvement" the effect on the quantity of a product in a Supply Curve is B. The curve would shift from the left to the right (S2 to S1).
When there is technology improvement, this means that the economy will be able to produce more goods and services with the same amount of resources that they have.
When there is an increase in the quantity produced, this means that there will be more supply in the economy. An increase in supply would affect the Supply curve such that it would move from the left to the right. This means that in this case, S2 would move to S1 on the right.
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