A. make it more malleable
B. remove the impurities in it
C. protect it against corrosion
D. render it passive
Correct Answer: Option C
C. protect it against corrosion
A. make it more malleable
B. remove the impurities in it
C. protect it against corrosion
D. render it passive
Correct Answer: Option C
C. protect it against corrosion
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