Answer:
The administration of liquid D shows a chemical change taking place.
Explanation:
A chemical reaction or a chemical change refers to a procedure where one or more components get changed into one or more novel and distinct substances. It can be said that a chemical change refers to a chemical reaction in which the realignment of atoms takes place.
A physical change can get reversed, while a chemical change generally cannot get reversed. When a chemical change takes place, there is also a variation in the system's energy. A chemical change, which emits heat is known as an exothermic reaction, and the one that captivates heat is known as an endothermic reaction.
When the liquid D is placed over the white crystalline solid, fizzing took place and the solid got disappeared. Thus, the solid form got transformed into a new substance with a fizzing sound showing the emergence of heat, all this indicates a chemical change taking place.