Final answer:
To determine the Actual Production History (APH), a farmer is required to provide a minimum of (D) four years of records. The APH is used to establish crop insurance coverage and premiums.
Step-by-step explanation:
The Actual Production History (APH) is determined based on a farmer's previous crop yields. To calculate the APH, a farmer must provide a minimum of four years of production records. If the farmer does not have four years of records, transitional yields (T-Yields) may be used to fill in the missing years.
The APH is a crucial aspect of crop insurance policies as it serves as a benchmark for determining crop insurance coverage levels, premiums, and potential claims. It reflects the production capability of the farm based on historical data, taking into account past yields, which helps in the assessment of risk by insurers.