From which fruit does malic acid primarily come?

Malic acid is primarily derived from apples, making this choice the correct response. It is an organic compound that belongs to the family of alpha-hydroxy acids (AHAs) and is known for its fruit-derived source. Malic acid plays a crucial role in various physiological processes and is frequently used in skincare products for its exfoliating and hydrating properties. Apples are particularly rich in malic acid, which contributes to their tart flavor and various health benefits. While other fruits like grapes and pears may contain malic acid, it is most predominantly associated with apples, which is why this option is the most accurate answer.