The correct answer is B. Magnesium burns
Step-by-step explanation:
Burning is considered a chemical process because this changes the properties and identity of substances. Moreover, if a material burns this implies the material or element is flammable or can ignite, and this is a chemical property because it is related to a chemical reaction and this property can only be observed through a chemical reaction. This is the opposite of properties such as color, state, or heat conductivity that can be studied without a chemical reaction, and are physical properties.