Which of the following units is the largest?

The largest unit among the options listed is the terabyte. In the context of digital data storage, each of these units represents a specific quantity of information, with each subsequent unit being larger than the last.

A kilobyte is typically considered to be around 1,024 bytes, and it is used to store relatively small amounts of data, such as text files. A megabyte equals 1,024 kilobytes, allowing for the storage of larger files like images or small audio tracks. Moving up, a gigabyte is made up of 1,024 megabytes and is commonly used to quantify data in larger contexts, such as video files or extensive databases.

Finally, a terabyte consists of 1,024 gigabytes and is often used to represent substantial amounts of data, such as in hard drives or cloud storage solutions where significant storage capacity is required. This hierarchy clearly establishes that a terabyte is the largest unit listed, making it the correct answer.