Answer: E. the effective price (i.e. price floor) for the commodity to ensure loan repayment
Step-by-step explanation:
The Price Support Programm is a policy by the government that is used in order to help farmers when there's a reduction in prices of agricultural products by giving out insurance to the farmers.
In U.S. price support programs, the "loan rate" is simply the effective price (i.e. price floor) for the commodity to ensure loan repayment.