Explanation:

To arrange the data sizes from largest to smallest, we must know the standard hierarchy of storage units: Terabyte (TB) > Gigabyte (GB) > Megabyte (MB) > Kilobyte (KB) > Byte > Bit. Let's examine each option based on this hierarchy: (a) KB, MB, TB, GB: This sequence is $10^3, 10^6, 10^{12}, 10^9$ bytes (approx). It starts small, gets larger, then smaller again. Incorrect. (b) TB, GB, KB, MB: This sequence is $10^{12}, 10^9, 10^3, 10^6$ bytes (approx). It goes from largest to smaller (TB to GB), then jumps to much smaller (KB), then jumps back to larger (MB). Incorrect. (c) GB, TB, MB, KB: This sequence is $10^9, 10^{12}, 10^6, 10^3$ bytes (approx). It starts with GB, then goes to the larger TB. Incorrect. (d) TB, GB, MB, KB: This sequence is $10^{12}, 10^9, 10^6, 10^3$ bytes (approx). This correctly follows the order from largest to smallest: Terabyte (TB) is the largest, followed by Gigabyte (GB), then Megabyte (MB), and finally Kilobyte (KB) as the smallest among these. Therefore, option (d) is the correct arrangement.