WinSun, a Chinese firm, began producing $3-$D printed houses in late $2013.$ These houses were produced in a fraction of the time it would take to produce a house in the regular way and at a much lower cost. This is an example of a$($n$)$:

WinSun, a Chinese firm, began producing $3-$D printed houses in late $2013.$ These houses were produced in a fraction of the time it would take to produce a house in the regular way and at a much lower cost. This is an example of a$($n$)$:

movement to the right along the same production function.

advance in technology leading to a rise in productivity.

rise in productivity causing an advance in technology.

movement to the left along the same production function.