Citric acid is commonly found in ___________.

Correct option is C

The correct answer is (c) oranges

Citric acid is a naturally occurring organic acid commonly found in citrus fruits such as oranges, lemons, limes, and grapefruits.
It is responsible for the sour taste of these fruits and is widely used as a natural preservative and flavoring agent.

Additional Information:

• Onions: Contain sulfur compounds.
• Apples: Contain malic acid.
• Bananas: Contain very small amounts of malic acid.