The correct answer is D. chemical reaction of acids.
Aspirin is a medication that is used to relieve pain, fever, and inflammation. It is a nonsteroidal anti-inflammatory drug (NSAID). Aspirin is derived from salicylic acid, which is found in the bark of willow trees. Salicylic acid was first isolated in 1763 by Edward Stone, an English clergyman. In 1897, Felix Hoffmann, a German chemist, synthesized aspirin from salicylic acid. Aspirin is now produced by a chemical reaction of salicylic acid and acetic anhydride.
Petroleum is a fossil fuel that is formed from the remains of ancient plants and animals. It is used to produce gasoline, diesel fuel, and other products. Earth is the planet that we live on. It is made up of rocks, minerals, and water. Trees are plants that have a woody stem and branches. They produce leaves, flowers, and fruit.
Aspirin is not obtained from petroleum, earth, or trees. It is obtained from a chemical reaction of acids.