Answer:
d. All of these are correct.
Step-by-step explanation:
In the case when the supply and demand model is used so the rent of the land set, and the economist draw the supply curve in a vertical line as the land supply is in fixed in nature, also it is perfectly inelastic, the quantity supplied does not rise in the case when the rent increased
These all reasons should be there as it is correlated with the price and the amount of the land
Hence, the correct option is d.