Final answer:
A terabyte represents the highest storage capacity among the options provided, equating to 1024 gigabytes, while a gigabyte is 1024 megabytes, and a megabyte is 1024 kilobytes.
Step-by-step explanation:
Among the given units of computer storage space, the terabyte represents the highest amount of storage capacity. A terabyte (TB) is equivalent to 1024 gigabytes (GB), a gigabyte is 1024 megabytes (MB), and one megabyte is 1024 kilobytes (KB). Therefore, as seen in the order of magnitude, a kilobyte is the smallest unit listed, followed by a megabyte, gigabyte, and then terabyte respectively. To put this in perspective, a single terabyte can contain approximately one trillion bytes of data, which is a vast amount of information considering that one megabyte (the unit for one million bytes) accommodates much less.