Answer:
C. The customer did not see the blacksmith throw the anvil, and the blacksmith knew that it was impossible to hit the customer with the anvil
Step-by-step explanation:
The most helpful option for his defence would be that this customer did not see him through the anvil and the blacksmith knew that it was not possible to hit him with the object which is option c.
An assault can arise by either trying to commit a battery or buy intentionally committing one. If this blacksmith claims that he knew it was not possible to hit the man with the anvil, this would take out the fact that he intentionally tried to commit an assault. Also, since this customer did not see him throw it, there will also be no way any form of assault would have been created.