Which sentence is unsuitable for an official maintenance notice specifically because it uses an informal get-passive?
The ventilation grille was cleaned on Tuesday.
The west shutter got repaired after the inspection.✓Respuesta correcta
The emergency switch was replaced by a licensed electrician.
The upper landing was closed for routine maintenance.
Explicación
The west shutter got repaired uses a standard informal passive that clashes with the official notice's stated register. It is not grammatically incorrect; a neutral be-passive would simply be the appropriate formal choice.