In R80, Unified Policy is a combination of

A.
Access control policy, QoS Policy, Desktop Security Policy and endpoint policy.

B.
Access control policy, QoS Policy, Desktop Security Policy and Threat Prevention Policy.

C.
Firewall policy, address Translation and application and URL filtering, QoS Policy, Desktop Security Policy
and Threat Prevention Policy.

D.
Access control policy, QoS Policy, Desktop Security Policy and VPN policy.

Explanation:
D is the best answer given the choices.
Unified Policy
In R80 the Access Control policy unifies the policies of these pre-R80 Software Blades:
Firewall and VPN
Application Control and URL Filtering
Identity Awareness
Data Awareness
Mobile Access
Security Zones
https://sc1.checkpoint.com/documents/R80/CP_R80_SecMGMT/html_frameset.htm?
topic=documents/R80/CP_R80_SecMGMT/126197&anchor=o129934