Question

what is the best definition of viscosity? a liquids resistance to mix with other liquids a liquids resistance to flow a liquids ability to change color a liquids resistance to change state

Explanation:

Viscosity is a fundamental property in physics - related to a fluid's internal friction. It measures how resistant a liquid is to flow. For example, honey has a high viscosity and flows slowly compared to water which has a low viscosity.

Answer:

a liquid's resistance to flow