Which education or training would best benefit graders, sorters, and equipment operators in the food product and processing
system?
a bachelor's degree
a master's degree
an internship
a phd

An Internship would best benefit graders, sorters, and equipment operators in the food product and processing  system.

Explanation:

The practice is a type of work experience provided by an agency for a limited time period of time. Previously restricted to medical students, the word is now used for a wide variety of placements in corporations, anti-profit organizations and government entities.

Usually, graduates try to gain specific knowledge and skills in a specific field. Employers profit from these jobs because they sometimes hire employees with their own trainees who have proven expertise, saving time and money long term. Internships are typically coordinated by third-party agencies that hire interns on behalf of business groups.

Requirements differ from country to country as to when interns should be treated as workers.

it's obviously d. it could be c though.