What is the pH scale? a. It is a measure of the acidity in a solution. c. It is a measure of the amount of pollution in the air. b. It is a measure of the severity of acid rain. d. It is a measure of the quantity of sulfuric and nitric particles in the air.
A, is the answer because pH measure the acidity it test the "water that you drink is ok to drink"
A is the correct answer (: