Final answer:
All choices listed are common methods used by MNCs to enhance internal control processes, including data consistency, centralized databases, executive accountability, and fast data access.
Step-by-step explanation:
The question pertains to common methods used by Multinational Corporations (MNCs) to improve their internal control processes. Common methods include ensuring consistent data reporting among subsidiaries, establishing a centralized database, making executives accountable for financial statement accuracy through personal verification, and speeding up data accessibility across departments and subsidiaries. All of the choices provided are indeed common strategies employed by MNCs to strengthen their internal controls, contributing to better governance and management oversight.