One Terabyte equals to
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10 ^ 6
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10 ^ 9
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10 ^ 12
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10 ^ 15
To solve this question, the user needs to know the basic unit of digital storage and its prefixes.
The basic unit of digital storage is a bit, which is represented by either a 0 or a 1. A byte is a group of 8 bits. The prefixes used to represent large amounts of bytes are kilo, mega, giga, and tera.
Now, let's go through each option and explain why it is right or wrong:
A. 10^6: This option is incorrect. One megabyte (MB) is equal to 10^6 bytes. One terabyte (TB) is equal to 10^12 bytes, which is a much larger quantity than 10^6.
B. 10^9: This option is incorrect. One gigabyte (GB) is equal to 10^9 bytes. One terabyte (TB) is equal to 10^12 bytes, which is a much larger quantity than 10^9.
C. 10^12: This option is correct. One terabyte (TB) is equal to 10^12 bytes. This is a very large quantity of data, and is often used to represent the storage capacity of hard drives and other digital storage devices.
D. 10^15: This option is incorrect. One petabyte (PB) is equal to 10^15 bytes. One terabyte (TB) is a much smaller quantity of data than 10^15 bytes.
Therefore, the answer is: C. 10^12
1 Terabyte = 10^12 bytes, following the standard SI decimal prefix system (kilo=10^3, mega=10^6, giga=10^9, tera=10^12). 10^6 is a Megabyte, 10^9 is a Gigabyte, and 10^15 is a Petabyte, so those are each off by the wrong power-of-ten prefix. (Storage vendors sometimes use the binary equivalent 2^40, but for this decimal-prefix question 10^12 is the intended answer.)