The correct answer for the acid released from a bee sting is option 4, methanoic acid. When a bee stings, it injects a venomous liquid into our skin, which causes pain and irritation. This venom contains various substances, including methanoic acid.

Option 1, tartaric acid, is a naturally occurring acid found in grapes, bananas, and tamarinds. It is commonly used in the food industry as a flavoring agent or acidulant. However, it is not the acid released from a bee sting.

Option 2, citric acid, is another naturally occurring acid found in citrus fruits like lemons and oranges. It is widely used as a food preservative, flavor enhancer, and cleaning agent. Similar to tartaric acid, it is not the acid present in a bee sting.

Option 3, ethanoic acid, also known as acetic acid, is the main component of vinegar. It has a sharp odor and is commonly used as a condiment, food preservative, and cleaning agent. However, it is not the acid released from a bee sting.

Therefore, the correct answer is option 4, methanoic acid, which is the acid responsible for the pain and irritation caused by