A man pushes a wall but fails to displace it. He does

Options :
  1. negative work
  2. positive work
  3. no work at all
  4. maximum positive work
Answer and Explanation :-

Answer: Option 3

Explanation:

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Such a simple concept, yet so true. That which we manifest is before us, we are the creators of our own destiny.
-Garth Stein The Art of Racing in the Rain