What is the approximate number of bytes in a kilobyte (KB)?

A kilobyte (KB) is defined as 1024 bytes in the context of computer science and digital information. This value is based on the binary system used by computers, where data is organized in powers of two. Therefore, 1 kilobyte equals 2 raised to the power of 10, which is 1024 bytes.

This definition is critical in understanding data storage, as it provides a standardized measure for quantifying memory and file sizes. For example, files that are a few kilobytes in size can often be managed within single blocks of memory, and programmers need to know the precise size when optimizing memory usage and performance.

In contrast, the other options do not reflect the standard definition of a kilobyte based on binary measurement. Thus, selecting 1024 as the correct approximation aligns with established computer science terminology and principles.