Aphysical property is one that
cannot be observed
can be observed by altering the identity
can be changed without altering the identity of a substance
must be observed through chemical means

The correct answer is the 3rd option A physical property is one that can be changed without altering the identity of a substance. These set of properties is not concentration dependent. They are used to describe matter. Examples are density, solubility, melting point, color and odor.

Iwould you figure it out but you don't have a picture or in your question as to what the physical property you're looking for is