Extraction depends on metal's reactivity position

Steps:

• Locate X in reactivity series: between Fe and Cu, so less reactive than Fe but more than Cu.
• Recall: Metals below carbon (like Fe, X) are extracted by reduction with carbon (method 2).
• Electrolysis (method 1) is for highly reactive metals above carbon, like Na or Al, not X.
• Copper (method 3) is less reactive than X, so cannot displace X from its oxide.

Why C is correct:

• X is below carbon in reactivity series, allowing reduction by carbon: XO + C → X + CO.

Why the others are wrong:

• A: Includes invalid methods 1 and 3.
• B: Includes invalid electrolysis (1) for moderately reactive X.
• D: Includes invalid copper reduction (3), as Cu cannot displace more reactive X.

Final answer: C