The correct answer is: B. tartaric acid.
Tartaric acid is a naturally occurring organic acid found in grapes, wine, and other fruits. It is also used as a food additive and in the production of baking powder.
Amino acids are the building blocks of proteins. They are not found in grapes.
Glycolic acid is a simple organic acid found in many plants and animals. It is also used in some cosmetics and skin care products.
Succinic acid is a dicarboxylic acid found in many plants and animals. It is also used in some industrial processes.
Tartaric acid is the main organic acid found in grapes. It is a white, crystalline solid that is soluble in water. Tartaric acid is used in the production of wine, baking powder, and other products. It is also used as a food additive.