What happens next in this paragraph?

How to identify performance anxiety
Determine if your pulse is elevated.
When you are anxious about a performance, your pulse will become elevated. This is your body's response to the stress and worry of your impending performance.
Choose your answer from: I. When you are anxious, your pulse will go in the opposite direction while at rest. There are several common occurrences which signal heightened blood pressure (tachycardia).; II. You may notice a shift in the way your heart rate lights up. This is called a desensitization.; III. When you are anxious about a performance, your heart rate can become elevated as you tend to perform exceptionally fast or tense. Any heart rate that is elevated immediately determines how fast your nerves function.; IV. You may hear your heat pounding in your ears if you are anxious enough. This may also cause you to blush or your body temperature to rise.;
IV.