Which ingredients are the best known and most widely used antimicrobial agents?
a. salt and bht.
b. nitrites and vitamin c.
c. sugar and tartrazine.
d. salt and sugar.
e. sulfites and citric acid.

he answer is the letter D salt and sugar

Salt, along with sugar, seems to have become the number one public enemy in our current diet. And not because they are harmful in themselves, since they are two essential and necessary components of any diet, but because we do not know how to control the amounts of these nutrients, nor of many others. In fact, in some countries it is consumed twice as much salt, or twice as much sugar, far exceeding the limits recommended by WHO.