Final answer:
Awning windows are the easiest to clean, followed by sliding windows. Louvers and casement windows can be more challenging.So the correct option is A.
Step-by-step explanation:
The easiest window to clean would be the awning window.
An awning window typically has a single pane of glass that swings open from the bottom, allowing for easy access to both sides of the glass.
This makes it simple to reach and clean the entire surface of the window.
On the other hand, sliding windows can be a bit more difficult to clean.
While they typically have removable sashes, they may require sliding or tilting the sashes to access the outside glass for thorough cleaning.
Louvers and casement windows can also be challenging to clean, as the louvers or multiple panes of glass in casement windows may require more detailed attention and effort to ensure all parts are adequately cleaned.
So the correct option is A.