The correct answer is: B. 1024 bytes
A kilobyte (KB) is a unit of information or computer storage equal to 1024 bytes. It is often used to measure the size of files, programs, and memory.
The term “kilobyte” is derived from the Greek word “kilo”, which means “thousand”. However, in computer science, a kilobyte is not equal to 1000 bytes. It is equal to 1024 bytes. This is because computers use a binary system, which means that they only have two values: 0 and 1. In binary, 1024 is written as 1000000000. This is why a kilobyte is equal to 1024 bytes.
The other options are incorrect because they are not equal to 1024 bytes. Option A is equal to 1000 bytes, option C is equal to 2048 bytes, and option D is equal to 512 bytes.
I hope this helps! Let me know if you have any other questions.