Step 1: Understanding the benefits of scientific management for workers. 
  
Scientific management aimed to improve productivity, reduce unnecessary efforts, and enhance the working conditions of workers. As a result, workers generally benefited from increased wages, better working conditions, and job security. 
Step 2: Analyzing the options. 
  
(A) Benefitted: Correct. Scientific management aimed to improve workers' efficiency, which also led to benefits for them, such as higher wages and better work conditions. 
  
(B) Suffered loss: This is incorrect. Scientific management was designed to benefit workers by reducing wasted effort and improving productivity. 
  
(C) Not effected: This is incorrect. Scientific management had a direct impact on workers by improving their efficiency and earnings. 
  
(D) None of these: This is incorrect, as the correct answer is (A) Benefitted. 
Step 3: Conclusion. 
  
The correct answer is (A) Benefitted, as workers generally benefitted from the principles of scientific management.