Final answer:
ERISA uses the term 'parties in interest' to describe plan-related persons who are prohibited by ERISA from entering into transactions with the plan.
Step-by-step explanation:
ERISA, which stands for Employee Retirement Income Security Act, uses the term 'parties in interest' to refer to plan-related persons who are prohibited by ERISA from entering into transactions with the plan.
These individuals may include plan fiduciaries, employers, employees, or service providers who have a relationship with the plan. The purpose of this provision is to prevent conflicts of interest and protect the interests of the plan participants.