The correct answer is option 1: a beesting is acidic and soap, an alkali, neutralizes it.

When a bee stings, it injects venom which is slightly acidic in nature. This acidic venom triggers a chemical response in our body, causing the burning sensation. To relieve this burning sensation, an alkali substance like soap can be used. Alkalis have the ability to neutralize acids by reacting with them and forming a salt.

In this case, when soap is rubbed onto the affected area, it comes in contact with the acidic venom and reacts with it. This reaction results in the formation of a salt, which is not irritating to our skin. As a result, the burning sensation is alleviated.

It is important to note that option 2, stating that a bee sting is alkaline and soap, an acid, neutralizes it, is incorrect. Bee stings are acidic in nature, not alkaline. So, using an acid like soap would not neutralize the sting but instead potentially worsen the burning sensation.