Respuesta :
Answer: The correct option is C.
Explanation:
Oxidation reactions are a type of chemical reactions in which a substance looses electrons and forms positive charge. The substance undergoing this reaction is being oxidized.
[tex]A\rightarrow A^++e^-[/tex]
Reduction reactions are a type of chemical reactions in which a substance gains electrons and forms negative charge. The substance undergoing this reaction is being reduced.
[tex]A^++e^-\rightarrow A[/tex]
For the half reaction in which iron gains electrons means that iron is getting reduced.
Hence, the correct option is C.