Which option is an example of a physical property?

This question is incomplete, so here is the complete question:

Which option is an example of a physical property? a. toxicity b. flammability c.pH d. freezing point

The correct answer is option d. freezing point.

Explanation:

A physical property is any that can be observed or measured without causing any change in the composition of matter, and thus we can be able to describe it.

In this category we can observe texture, color, smell, density, etc.

Each matter has three states: liquid, solid and gaseous, and all matter can exist in each of them.

The boiling point and the melting point are related to these changes in matter, as well as the freezing point.

that would be because of both gravity and friction. so     c