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What is a precursor?​ select one:
a. ​a substance that is used to synthesize another compound
b. A sign or symptom of a subclinical vitamin deficiency disorder​
c. ​a conditionally essential vitamin
d. A substance that is recycled through the liver and intestines
e. ​a sign or symptom of a clinical vitamin deficiency disorder?

Answer :

EhiCos
Hi,

The answer is letter a.

I hope this helps. If you’d like further explanation please let me know. Also, English is not my first language, so I’m sorry for any mistakes.

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