As Jen is planning to upgrade her monitor with a better resolution, the most important thing she should be looking at in the monitor is pixels/ square inch.
pixels / square inch
Step-by-step explanation:
All other options are irrelevant to monitor. Machine cycles/second deals with the working of CPU, terabytes is a unit of memory that can correspond to the main memory of the computer and gigahertz is a unit of frequency that corresponds to the clock speed of the microprocessor.
Jen just wants a monitor with better resolution. Pixels play a very important role in determining the quality of the displayed content. The more pixels per square inch of the screen, the better is the quality.