UTC is roughly equivalent to GMT.

• A. Central European Time
• B. Pacific Standard Time
• C. Australian Eastern Standard Time
• D. Greenwich Mean Time

Answer: (D)

Understanding how UTC relates to GMT helps here. UTC, or Coordinated Universal Time, is the modern worldwide time standard used as the baseline for clocks and aviation schedules. Greenwich Mean Time is the historical solar time at the Prime Meridian and is used as a time zone in some places.

They’re essentially the same for everyday use: UTC serves as the precise reference, while GMT is the time zone that people historically used at Greenwich. The key technical difference is that UTC includes leap seconds to stay aligned with the Earth's rotation, whereas GMT does not track those leap seconds. In practice, the two are shown as the same time most of the time, which is why GMT is considered the best match for UTC in this context.

The other options refer to different time zones (Central European Time, Pacific Standard Time, Australian Eastern Standard Time) and do not align with UTC in the same way. So Greenwich Mean Time best fits what UTC represents.