Silicon Diode problems
"Forward bias" means that the polarity of the voltage applied to the diode causes it to conduct. "Reverse bias" means that the polarity is reversed, and the diode does not conduct. Remember that conventional current (flowing from positive to negative) must flow in the direction of the arrow in the diode symbol when the diode is conducting. You'll need to work out whether the voltage applied to the diode in your circuit diagram causes it to conduct or not.