Whitney wanted to speed up the making of guns by having machines manufacture each part. All machine-made parts would be alike--for example, one trigger would be identical to another. Identical parts would fit together with all other parts, and gunsmiths would not have to build each gun from scratch. Interchangeable parts would save time and money.
A. customers had to wait longer to obtain the new parts made by machines.
B. machines could quickly manufacture parts people once made.
C. businesses' costs could increase to pay for the machinery.
D. parts made by machines would result in higher prices.
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The best answer is B. machines could quickly manufacture parts people once made.
This option directly reflects how interchangeable parts would help businesses by highlighting the efficiency gained through the use of machines to produce identical components, which speeds up production and reduces labor time.
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