Reactivity series position determines extraction method for MO Steps: - Iron displaces M from aqueous M⁺, indicating M has a less negative standard reduction potential than Fe, placing M higher in the electrochemical series (easier to reduce but still reactive enough for special extraction). - Metals forming stable oxides like MO, when positioned high in the series relative to carbon, cannot be reduced by heating alone with carbon due to oxide stability. - Electrolysis is required to extract such metals from their oxides. - Carbon serves as the anode in the electrolytic cell to facilitate the process without reacting excessively. Why B is correct: - High position in the electrochemical series requires electrolysis with carbon anodes, as per the Hall-Héroult process principle for reactive metals' oxides. Why the others are wrong: - A: Omits carbon's role as electrode in electrolysis for high-series metals. - C: Heating with carbon fails for high-series metals due to unreduced stable oxides (Ellingham diagram shows ΔG too positive). - D: Low position implies easier reduction by heating with carbon only, contradicting the displacement evidence. Final …