Final answer:
Alpha Hydroxy Acid (AHA) is an organic acid commonly found in fruits and is widely used in skincare products, not to be confused with industrial or synthetic acids used for other purposes. The correct answer is option b.
Step-by-step explanation:
The Alpha Hydroxy Acid (AHA) is b) an acid commonly found in fruits. AHAs are organic compounds that can be found in a variety of natural sources such as citric acid from citrus fruits. These acids are widely used in skincare for their exfoliating properties, which help to remove the upper layer of dead skin cells, thus improving the skin's appearance.
It's important to differentiate these from industrial acids, like hydrochloric acid, which is used in manufacturing and cleaning, or synthetic acids, which are created in laboratories for various purposes. Unlike alpha-amino acids, which contain an amine group and a carboxylic acid group on the same carbon atom and are building blocks of proteins, AHAs are known for their use in cosmetic and dermatological products.