In a galvanic cell, electrons travel from :Anode to cathode through electrolyte solution.Cathode to anode through electrolyte solution.Anode to cathode through metal wire.Cathode to anode through metal wire.

In a galvanic cell, electrons travel from the anode to the cathode through the metal wire.

Here's the step by step process:

1. Oxidation occurs at the anode (negative electrode). This is where the substance loses electrons.

2. These electrons that are lost move through the metal wire to the cathode (positive electrode). This movement of electrons forms the electric current that can be used to do work.

3. At the cathode, reduction occurs. This is where the substance gains the electrons that have traveled from the anode.

4. The electrolyte solution allows ions to move between the anode and cathode, maintaining charge balance within the cell.

So, the correct answer is "Anode to cathode through metal wire."