Frederick Winslow Taylor, a machinist and engineer who worke

[BTGmoderatorDC]

Frederick Winslow Taylor, a machinist and engineer who worked in the early twentieth century, believed that the productivity of a job could be improved if one were to separate the components of a task into its individual motions and found the best way to perform each motion, then redesign the job so that each motion could be done as efficiently as possible.

(A) if one were to separate the components of a task into its individual motions and found the best way to perform each motion, then redesign
(B) if one separated the components of a task into individual motions, found the best way to perform the motions, and then redesigning
(C) if the components of a task were separated into individual motions, finding the best way of performing the motions, and then redesigned
(D) by separating the components of a task into individual motions, finding the best way to perform each motion, and then redesigning
(E) by separating the components of a task into individual motions, finding the best way of performing each motion, then redesign

OA D

Source: GMAT Prep

[himalaya savalia]

Look for error of parallelism.

A. Incorrect to separate --> found
B. Incorrect found --> redesigning
C. Incorrect separated --> finding. Also it wrongly implies that task are to be separated by finding best way of performing the motions. These are two independent tasks.
D. Correct separating --> finding --> redesigning
E. Incorrect finding --> redesign