Answer:
Living and car both move, both release energy, both needs energy to move and both gets damages in accidents.
In a typical ECG (Electrocardiogram) the first wave obtained is P wave; The P wave represents the depolarization of the atria. After this, the QRS complex is formed. The QRS wave represents the depolarization of the ventricles. During the depolarization phase, the ventricles contracts and pushes the blood into the atria. Hence, the correct answer is depolarization of the ventricles.
The correct answer is choice B, Tt. I hope this helps.
