Please answer all parts of the question, Thank you Refer to the graph below to answer the following questions: At what output does diminishing returns begin? What output is the most productive output?...

Please answer all parts of the question, Thank you

Refer to the graph below to answer the following questions:

1. At what output does diminishing returns begin?


2. What output is the most productive output?


3. At what output is marginal product at the maximum point?


4. What output is economic capacity?