Answer:
Bureaucratic
Step-by-step explanation:
Bureaucratic control in an organisation occurs when there is use of rules, policies, heirachy of authority, written documentation, system of rewards, and other formal tools aimed at influencing employee behaviour and assessing performance.
In this instance as the firm undergoes more aquisitions it has grown larger, and now requires more formal tools like bureaucratic control to manage employee related activities.
Bureaucratic control involves standardised rules, methods, and verification process.