This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
"Best mutual adjustment of man and his work for improvement of human efficiency" is known as: 
Select and explain. 
A. Ergonomics, B. Euthenics, C. Eugenics, D. None of the above
A: Ergonomics
Answer: A: Ergonomics 
Explanation: Ergonomics means fitting the job to the worker. Training in ergonomics involves designing of machines, tools, equipment and manufacturing processes, lay out of places of work, methods of work and environment in order to achieve greater efficiency of both man and woman. Ref: Park 21st edition page 744.