. An electrochemical cell can behave like an electrolytic cell when
When an external and opposite potential is applied on an electrochemical or galvanic cell,
the reaction continues to take place until the opposing voltage becomes 1.1 V.
As soon as this stage is reached, the current stops flowing through the cell and now if there is any further increase in the external potential,
the reaction starts functioning in the opposite direction and hence the cell starts behaving like an electrolytic cell.
The correct option is C, i.e., An electrochemical cell can behave like an electrolytic cell when Ecxt > Ecall