Final answer:
The correct description of this ECG strip is Sinus tachycardia, which is characterized by a regular rhythm with a heart rate greater than 100 beats per minute.
Step-by-step explanation:
The correct description of this ECG strip is Sinus tachycardia. Sinus tachycardia is characterized by a regular rhythm with a heart rate greater than 100 beats per minute. It can be caused by various factors such as exercise, stress, or certain medications. In sinus tachycardia, the ECG will show normal P waves, a normal PR interval, and a normal QRS complex.