The 17 basic units of motion, identified by Frank and Lillian Gilbreth, were named _____.
A. gilbreths
B. time frames
C. therbligs
D. units
E. action works
Answer: C
The 17 basic units of motion, identified by Frank and Lillian Gilbreth, were named _____.
A. gilbreths
B. time frames
C. therbligs
D. units
E. action works