Respuesta :
Welles's reaction to the panic caused by the radio version of The War of the Worlds as it aired was, he was surprised that his show had caused such widespread panic.
What is panic?
Panic is a sudden trigger of fear or danger.
Because in his radio show Welles made people believe that the earth has being taken over by Martians. And after listening to this people panic and believed that what he said was true.
Hence the correct option is, D. He was surprised that his show had caused such widespread panic.
To know more about panic:
https://brainly.com/question/13308389
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