Which of the Following Describes the Major Significance of the Element

Multiple Choice

Which of the following describes the major significance of the element chlorine in the human body?

A) ionized form makes body fluids acidic
B) ionized form is most plentiful anion in extracellular fluid
C) forms backbone of all organic molecules
D) required for bone and tooth structure
E) ionized form is most plentiful cation in extracellular fluid