Question

4. Why does the man take off his coat?
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Answer 1

They both want to show their superiority on the man walking down the road. That man was wearing a coat. Wind claims that it is more powerful and make that man remove his coat more quickly. To prove that, wind started blowing at a very fast speed but the man holds his coat tightly.

or

because of heat and warmness or it may fell uncomfortable

Answer 2

The man took off his coat because he was removing his clothes.