Correct answer is A. The prime meridian is the imaginary line that is used to measure longitude.
The prime meridian is the 0° line of longitude, which is the starting point for measuring distances both east and west around the Earth. The prime meridian is arbitrary, which means it can be chosen anywhere.
Prime Meridian also defines Coordinated Universal Time (UTC). UTC never changes for DST or anything else. Just as prime meridian is the standard for longitude, UTC is the standard for time. All countries and regions measure their time zones based on UTC.
There are 2 time zones in the world. If an event occurs at 11 am in Houston, Texas, USA, it will be reported at 12 noon. in Orlando, Florida, USA; pm. in Morocco; 9 pm. in Kolkata, India; and 6 a.m. in Honolulu, Hawaii, USA. The event happened at pm. UTC.
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