For a molecule to be considered organic what elements must be present? a. carbon only b. oxygen and hydrogen c. carbon and hydrogen d. carbon and oxygen

For a molecule to be considered organic elements must be present in  Carbon and hydrogen. The answer to your question would be letter C. These are use in order to create an element which is further used all living organisms in living.

For a molecule to be organic, it has to contain a backbone of carbon and some hydrogen so the answer would be C.