Answer:
1. first-line manager.
Explanation:
Calvin is a first-line manager, his in charge of making sure that his local office runs well.
His is immediately above non-managerial staff such as clerks and assistants. He has to respond to middle-management, and sometimes top-management for his actions.
His degree of responsability is lower than that of a middle-manager and top-manager. His compensation therefore is lower too.