Kilobytes measure thousands of bytes.

• A. Kilobytes measure thousands of bytes
• B. Megabytes measure billions of bytes
• C. Gigabytes measure thousands of bytes
• D. Terabytes measure millions of bytes

Answer: (A)

Kilobytes represent data sizes on the order of thousands of bytes. In this scale, 1 kilobyte is typically 1,000 bytes (though some contexts use 1,024 bytes, called a kibibyte). That means kilobytes measure thousands of bytes, which is exactly what the statement says. The next units scale up to about a million, a billion, and a trillion bytes (megabytes, gigabytes, terabytes). The other options mix up these scales, describing megabytes, gigabytes, or terabytes as corresponding to thousands or millions of bytes, which isn’t correct for the stated units.