Answer:
D. Was an efficiency expert is the correct answer.
Step-by-step explanation:
Fredrick Taylor was an American engineer who tried to improve the industrial efficiency. He wrote the book shop management. He used to believe that management should be studied as a discipline, instead of trade unions the workers should participate with each other and the best results in the factory could be received only with a partnership between a trained and qualified management. He coined the term scientific management in the article The Principle of Scientific management that was published in 1911.