Question

Which of the following is a physical property of a substance?

A.Toxicity
B.Flammability
C.Reactivity
D.Hardness

Answer 1

I'm pretty sure it is Hardness

Step-by-step explanation:

It is the only thing that you personally can tell by using one of your five senses. Physical properties can only be told by the look or feel of the object. Sorry if i'm wrong

Answer 2

A toxicity is answer for that question