Correct Electrolysis Statement and Reason

Steps:

• Evaluate option A: Both solutions have Cu²⁺ ions, enabling copper deposition at cathode and dissolution at anode in electrolysis.
• Evaluate option B: Cryolite lowers melting point of aluminum oxide, but incomplete reason about anodes (likely carbon oxidation) is cut off and unclear.
• Evaluate option C: Incomplete text on sulfuric acid electrolysis; mentions H₂SO₄ presence but garbled, lacks full reason.
• Select A as only complete, accurate pairing of statement and explanation.

Why A is correct:

• In electrolysis of Cu²⁺ solutions with copper electrodes, Cu²⁺(aq) + 2e⁻ → Cu(s) at cathode deposits copper, while anode oxidation transfers Cu atoms, per Faraday's laws of electrolysis.

Why the others are wrong:

• B: Incomplete; cryolite aids melting, but anode reason (e.g., carbon consumption) is missing or incorrect.
• C: Text is garbled and incomplete; no clear reason for sulfuric acid electrolysis products.
• D: Incomplete; zinc reactivity doesn't explain cathode deposition—Cu²⁺ reduces preferentially over Zn²⁺ due to standard electrode potentials.

Final answer: A