Final answer:
The smallest unit of measure among TB, PB, MB, and GB is MB, which stands for Megabyte. One Megabyte equals approximately 1,024 kilobytes.
Step-by-step explanation:
The smallest unit of measure amongst the options provided is c) MB, which stands for Megabyte. In terms of computer memory, storage space is typically measured from smallest to largest in kilobytes (KB), megabytes (MB), gigabytes (GB), and terabytes (TB). Specifically, one megabyte (MB) equates to approximately 1,024 kilobytes (KB); one gigabyte (GB) is equivalent to about 1,024 megabytes (MB); and one terabyte (TB) is equal to roughly 1,024 gigabytes (GB). As such, the unit for one million bytes is Megabyte (MB).