Correct Answer - Option 3 : behave as a synchronous motor and will rotate in the same direction
In case of failure of the prime mover of the generator and the excitation is present then the generator draws power from the other parallel generator and starts working as a synchronous motor with the same direction and for this motor, the turbine is working as a load.
Because of the huge mass of the turbine the motor draws a huge amount of current which damages the winding. It will absorb power from the bus bar.