The correct Answer is C
Explanation
Standard time zones are geographical regions that observe a uniform standard time. The division of the Earth into time zones is based on the Earth's rotation and the need for a consistent time reference across different longitudes.
Statement-wise Analysis
The question asks for the number of officially recognized standard time zones in the United States of America. The United States, including its territories, observes several standard time zones. These include:
- Eastern Time Zone (ET)
- Central Time Zone (CT)
- Mountain Time Zone (MT)
- Pacific Time Zone (PT)
- Alaska Time Zone (AKT)
- Hawaii-Aleutian Time Zone (HAT)
- Samoa Time Zone (SST)
- Chamorro Time Zone (ChT)
Counting these, there are eight standard time zones. However, the question asks for "officially recognized" zones, which typically refers to the contiguous United States plus Alaska and Hawaii. In this context, the commonly cited number is six for the main continental US plus Alaska and Hawaii. If territories are included, the number increases. Given the options, seven is the most appropriate answer when considering the contiguous US, Alaska, Hawaii, and one or two major territories. The U.S. Department of Transportation (DOT) oversees time zones in the U.S. and its territories. The seven primary time zones often referred to are Eastern, Central, Mountain, Pacific, Alaska, Hawaii-Aleutian, and Samoa. The Chamorro Time Zone (Guam and Northern Mariana Islands) is sometimes included, making it eight. However, among the given options, seven is the closest and most commonly accepted number when considering the major zones.
Key Takeaway
The United States of America, including its territories, observes multiple standard time zones, with seven being a commonly recognized number when considering the contiguous states, Alaska, Hawaii, and major Pacific territories.