Final answer:
Statement B is most accurate; Illinois producers must complete a 3 credit hour ethics course, available in classroom or self-study format within each two-year renewal period.
Step-by-step explanation:
The most accurate statement pertaining to the Illinois producer ethics requirement is B: Each producer must complete a 3 credit hour ethics course, which may be taken either in classroom or self-study format within each two-year renewal period. It is a mandatory part of licensure maintenance for producers in Illinois. Ethics education is critical to ensure that producers conduct their business in a manner that follows the legal and ethical standards of the industry. Therefore, option A is incomplete in not specifying the format, option C is incorrect as ethics is not optional, and option D is incorrect because the requirement is tied to the two-year renewal period, not every calendar year.