An organic molecule will always contain CARBON.
The correct option is A.
An organic molecule or compound refers to a chemical entity in which one or more atoms of carbon are bonded covalently with atoms of other elements. Because of the number of valence electron that carbon possess, it has the capacity to form different types of chemical bond with different types of elements.
Lead.
"Due to insufficient water treatment, lead leached from water pipes into the drinking water, exposing over 100,000 residents to elevated lead levels."
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