A Researcher Has Isolated an Organic,water-Soluble Chemical from Roses

A researcher has isolated an organic,water-soluble chemical from roses.After performing in vivo tests,the scientist determines that the chemical supplies no energy for cells,but protects cell membranes from being damaged by certain environmental factors.Based on this information,the researcher may have discovered a(n) ________. 

A) antioxidant
B) amino acid
C) precursor
D) autoanalyzing agent

Correct Answer:

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