Answer:
A.Bases have a pH lower than 7.
Step-by-step explanation:
pH, is the degree of acidity or alkalinity of a substance. pH uses a range of numbers from 0 - 14 to indicate the level of how acidic or basic a substance is. Generally, acids are substances that release H+ (hydrogen ions) when dissociated in water while bases are substances that release the OH- (hydroxyl ion) when dissociated.
In the pH scale, below 7 indicates ACIDITY with the lower (<) the value, the higher the acidity while greater (>) than 7 indicates ALKALINITY or BASICITY. Hence, according to this question, it is not to TRUE that "Bases have a pH lower than 7".