Which of the following units would you use to denote cycles per second?

The correct choice is Hertz, which is the unit of frequency that quantifies cycles per second. It is widely used in physics, engineering, and telecommunications to measure event occurrences over time. Specifically, when dealing with signals, sound waves, or any periodic events, Hertz provides a clear indication of how many times a cycle completes in one second, making it essential in various technological contexts, including computer processing speeds and communication frequencies.

The other options refer to units of digital information storage rather than frequency. Megabyte, gigabyte, and terabyte are units that measure data size, where a megabyte is 1,024 kilobytes, a gigabyte is 1,024 megabytes, and a terabyte is 1,024 gigabytes. These units are utilized for quantifying file sizes, storage capacities, and data transfer amounts, rather than measuring cycles per second.