Final answer:
HQMC C4 CY's role is cybersecurity coordination, focusing on setting policies and defense against cyber threats within the United States Marine Corps.
Step-by-step explanation:
The role of HQMC C4 CY (Headquarters Marine Corps, Command, Control, Communications, and Computers (C4) Cybersecurity) is a. Cybersecurity coordination. As part of the United States Marine Corps, this department is primarily responsible for setting cybersecurity policies, coordinating defense operations against cyber threats, and working to secure communications and information systems against cyber attacks.
A functional and secure cyber environment is critical for military operations, and HQMC C4 CY plays a vital role in maintaining this security and operational readiness across the Marine Corps.