Which Six Elements Are the Main Components in Living Organisms

Multiple Choice

Which six elements are the main components in living organisms?

A) carbon,hydrogen,nitrogen,oxygen,phosphorus,sulfur
B) copper,iron,magnesium,sodium,water,zinc
C) carbon dioxide,hydrogen,nitrogen,oxygen,phosphate,sulfate
D) calcium,hydrogen,iron,potassium,sulfur,water
E) aluminum,magnesium,nitrogen,silicon,sodium,sulfur