Acompound, like water, can be broken down (decomposed) by:

filtration

electrolysis

distillation

evaporation

Electrolysis

Explanation:Electrolysis refers to the process of decomposing an electrolyte by passing an electric current through it.Electrolytes are ionic compounds either in molten or aqueous form that may be decomposed by passing an electric current through them.Water is an example of an electrolyte that can be decomposed using electrolysis.During electrolysis cations undergo reduction at the cathode while anions undergo oxidation at the anode.

In this case;

At the Cathode;

4H⁺(aq) + 4e → 2H₂(g)

At the Anode;

4OH⁻(aq) → H₂O(l) + O₂(g) + 4e

Dsolubility let me know if you have any other questions for chemistry

Ithink the answer is d.