Answer: b) flammability
Step-by-step explanation:
Physical property can be define as the property which defines how the material appears. This property can be observed, recorded and measured. The physical property includes the density, boiling point, melting point, solubility, odor, color, appearance, texture and others.
Flammability is not a physical property. It is the ability of the chemical to ignite or burn producing fire or combustion. The degree of flammability can be define by the combustion of the chemical through the fire test.