Frank and Lillian Gilbreth identified 17 basic units of ______, each of which they called a "therblig."

Question

A. time
B. distance
C. energy
D. data
E. motion

Answer 1

E. motion

A made-up word you won't find in most dictionaries, therblig was coined by Frank Gilbreth and is, in fact, "Gilbreth" spelled backward, with the "t" and the "h" reversed. It refers to 1 of 17 basic motions. By identifying the therbligs in a job, Frank and his wife, Lillian, were able to eliminate motions while simultaneously reducing fatigue.