The correct answer is A. Rent paid by a farmer is a cost of production and therefore enters into the price of his product.
Rent is a payment made by a tenant to a landlord for the use of land or property. In the case of a farmer, the rent is paid to the owner of the land that the farmer is using to grow crops or raise livestock. The rent is a cost of production because it is a payment that the farmer must make in order to use the land. The rent is therefore included in the price of the farmer’s product, which is the price that the farmer charges for his crops or livestock.
The other options are incorrect. Option B states that rent does not enter into the price of a farmer’s product. This is incorrect because rent is a cost of production and therefore enters into the price of the farmer’s product. Option C states that rent is unjustified. This is incorrect because rent is a payment that the farmer must make in order to use the land. Option D is incorrect because it does not provide a correct answer to the question.