The air purifier made with cow dung is not harmful for the health of the humans like the other air fresheners which contain benzo acetan.
<u>Explanation:</u>
The process of making an air freshener from cow dung is done by using cow manure which is fermented for three days. Then the water is taken from the fermented manure and mixed it with coconut water. Finally, they distilled the liquid to eliminate all impurities.
The whole process took seven days to form this air purifier and in the end the product was a liquid air freshener.
The answer is b.) jane addams
