This is the best option for appropriate syntax as the sentence adopts an active voice. The subject "everyone" is acted upon by the verb "scared". The sentence is then completed by the object which is the cause that everyone is scared which is the abandoned house.
Probably children between 7 and 9 years old because they have already learned how to read and write but they still have a limited vocabulary range comparing to older people. Also, they do not fully understand written instruction and recreate them in their own minds, the visual cues helpthe written language.
