Respuesta :
Answer: Option (b) is the correct answer.
Explanation:
Chemical formula of citric acid is [tex]C_{6}H_{8}O_{7}[/tex].
It is acidic in nature and therefore, it is used to add tartness or sour flavor to the food like jams, jellies, candies etc.
It is also used as a preservative and thus it helps to preserve various food items for a longer period of time.