<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 32-year-old woman makes an appointment at her physicians office for a regular health check-up. She does not have any complaints and mentions that she has started to train for an upcoming marathon and hydrates exclusively with electrolyte solutions. She has been trying unsuccessfully to quit smoking for a few years now. She has hypercholesterolemia, which is controlled with a low-cholesterol diet. Family history is significant for hypertension in both of her parents. Her father died of myocardial infarction a few years ago. The vital signs include heart rate 55min, respiratory rate 16min, temperature 37.6 C 99.68 F, and blood pressure 12088 mm Hg. The physical exam findings are within normal limits. A routine electrocardiogram ECG is done and is shown below. The abnormal wave seen on the ECG tracing represents which of the following mechanical events?? A: Ventricular depolarization, B: Period between ventricular depolarization and repolarization, C: Ventricular repolarization, D: Atrial depolarization, E: Atrial repolarization,  <response>: This is a medical question asking about identifying the abnormal wave seen on an ECG tracing. It provides a clinical vignette about a 32-year-old woman coming in for a routine health checkup. She has some risk factors for cardiovascular disease like smoking, family history, and hypercholesterolemia. The question also provides her vital signs and says her physical exam was normal. It then states that a routine ECG was done which showed an abnormal wave, and asks what mechanical event this wave represents. To answer this, we need to analyze the ECG tracing and identify the abnormal wave. The choices provide different events in the cardiac cycle like atrial and ventricular depolarizationrepolarization. Knowing the sequence of a normal ECG waveform and how it correlates to electrical and mechanical events of the heart will allow us to pick out the abnormal wave and identify what it represents.C: Ventricular repolarization 