In a galvanic cell, the half-cell in which oxidation takes place is called ______ and it has a negative potential with respect to the solution.

anode

The correct answer is option 4. anode.

In a galvanic cell, the half-cell in which oxidation takes place is called the Anode.

In a galvanic cell, oxidation occurs at the anode. Electrons are released from the oxidation reaction, resulting in a buildup of negative charge at the anode. Therefore, the anode has a negative potential with respect to the solution in the cell.