A) This would increase the demand as firms are willing to hire more labor at given any wage.

B) This would reduce demand. A decline in productivity of labor implies higher cost per unit of output for the firms. So the quantity of labor demanded will decline at any given wage.

C) The demand will increase. As price of substitute goes up, consumers are more likely to switch to the specific type of labor at any given wage.

D) The demand will rise. As price of complement go up, the quantity demanded of the complementary good will go up, so does the quantity demanded for the specific type of labor.

E) The demand will decline. Since fewer firms now hire the specific type of labor at any given wage, the market demand will decline.

F) No effect. The change in price only affects the quantity demanded, and doesn't affect the demand schedule.

G) This will reduce the demand. The monopoly will generally produce a lower quantity than in a competitive equilibrium, which reduces the quantity demanded for the specific type of labor at any given wage.