For The process of electrolysis, which exam wording answer best supports this Unit 4.4 objective: Describe an electrolyte as a liquid that contains free-moving ions?

The correct option is They must have free-moving ions to conduct electricity - correct exam wording for electrolyte.

The correct option is They must have free-moving ions to conduct electricity - correct exam wording for electrolyte. They must have free-moving ions to conduct electricity - correct exam wording for electrolyte is correct because it directly supports the approved learning objective to describe an electrolyte as a liquid that contains free-moving ions. This exam wording variant asks students to separate electrolyte from similar Unit 4.4 chemical-change ideas. The reasoning belongs to The process of electrolysis within Electrolysis, so it should not be confused with nearby ideas about acids, alkalis, bases, oxidation, reduction, displacement, reactivity, electrolysis, electrodes, ions, pH, or salt preparation unless those are named in the objective. Use the focus term electrolyte to keep the answer aligned with AQA GCSE Chemistry 8462 Unit 4.4 Chemical changes. Keep acid, alkali and base distinct; keep oxidation and reduction distinct; do not mix reduction with displacement; keep electrolysis separate from electroplating; distinguish anode from cathode, positive ions from negative ions, oxidation state from ionic charge, and strong acid from concentrated acid. The other options are weaker because they either use the wrong reaction type, wrong ion, wrong electrode, wrong acid-base distinction, vague wording, or the wrong chemical-change context.