Which of the following details you figure out what has happened to the owners of the house in "there will come soft rains"?

The correct option is this: THERE ARE SILHOUETTES OF FOUR PEOPLE BURNED INTO THE SIDES OF THE HOUSE. 
The book 'There will come soft rains' was a fictional story written by Ray Bradbury. The story is about how nature will continues to survive even after man has destroy himself. The story centered around an automated house which continue to exist and function long after its owner had died, but eventually, the house got destroyed by a fire outbreak.