Only after Mr. Robert Thorn arrived at the hospital, he know his son had died at birth.
I'm not sure what the story "To Build a Fire" is, but I hope I can help you by telling you that "third person" is when the characters/protagonist are described through "he", "she", etc. and "omniscient point of view" is all seeing, therefore, options 2 and 4 are impossible.
Answer:
In active voice, the subject itself performs the action rather than having the action performed upon it.
Explanation:
sorry if i didn't answer you question
