Vitamins are classified according to a. their ability to fight disease. b. their coenzymes. c. their functions in the body. d. their solubility in water and fat.

? you expect us to answer this? ? this is your schoolwork, i don't think we can with this, i think it would considering being

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

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