In a factory that produces jeans, one worker cuts out the pieces of fabric based on a pattern, another worker sews the pieces together, another adds the zipper, another steams the fabric, and so forth. this is an example of

Division of labor is the answer for this question

d

Explanation:

a machine for spinning with more than one spindle at a time, patented James Hargreaves' 'Spinning Jenny', the patent for which is shown here, would revolutionise the process of cotton spinning. The machine used eight spindles onto which the thread was spun, so by turning a single wheel, the operator could now spin eight threads at once.