Final answer:
The correct option for the number of days' notice a producer must be given before a scheduled hearing is 10 (option B).
Step-by-step explanation:
The question pertains to the notice period that a producer must be given before a scheduled hearing. In this context, the correct option is B) 10 days' notice.
This question is related to employment law and the requirement for employers to provide written notice before plant closings or large layoffs. The reference suggests that employers with more than 100 employees must give a notice period of 60 days. However, this information is not directly applicable to the question asked, as it does not specifically address scheduled hearings for producers. Therefore, the correct option is based on the given choices, which is 10 days' notice (option B).