Final answer:
A Unified Theme generally includes a Unified Header, Unified Footer, and Unified Menu, which create a consistent user experience across different sections of a platform.
Step-by-step explanation:
The features included in the Unified Theme typically refer to the cohesive design components that provide a consistent user interface experience across different parts of a software or website. Although the exact elements of a Unified Theme can vary depending on the platform, it typically includes features such as a Unified Header and Unified Footer, which are consistent across all pages and sections of the platform for a seamless user experience.
A Unified Menu might also be included to ensure easy navigation through different functions and areas within the platform. The terms Default Header and Default Footer could refer to standardized features but may not imply the seamless integration that a Unified Theme suggests. Therefore, a Unified Theme usually consists of options B, C, and D: Unified Header, Unified Footer, and Unified Menu.