Final answer:
Ephrath's company employs a hierarchical communication structure known as the chain of command, which ensures information is passed through the levels of authority for organizational efficiency.
Step-by-step explanation:
The management technique being followed in Ephrath's bulb manufacturing company is the chain of command. This technique is part of a wider concept known as the hierarchy of authority, which assigns each individual or office to a position within the organization where they are responsible to and must answer to their superiors. In Ephrath's case, she must follow the protocol by conveying important information to her immediate boss, who will then pass it along through the hierarchical levels until it reaches the desired person in the production department. This hierarchical communication structure is seen as critical within the industrial model to maintain efficiency and ensure that organizational procedures are followed.