Answer:
Warily
Explanation:
A very cautious mouse would warily walk past a sleeping cat. When someone is wary, they are cautious, careful.
<em>To maneuver</em> means <em>to move skilfully or carefully</em>, but it would not be used in the context of a mouse. For example, you could maneuver while driving a car.
The remaining two words have completely different meanings. <em>Matronly</em> means <em>of, relating to, or having the characteristics of a matron</em> (usually a mature and dignified married woman who has an established social position).
<em>Odious</em> means <em>extremely unpleasant.</em>
