Tachycardia is a condition in which the heart rate increases from the normal range. Option 1, which states that the heart rate decreases from the normal, is incorrect. Option 3, which claims that the heart stops beating, is also incorrect. Tachycardia does not imply a complete absence of heart rhythm. Option 4, which suggests that the heart fails to pump, is unrelated to tachycardia and is therefore incorrect. It`s important to note that while tachycardia is an abnormal increase in heart rate, it does not necessarily indicate a specific underlying cause. It may be a temporary response to conditions like exercise, stress, fever, or certain medications. Long-term or persistent tachycardia should be evaluated by a healthcare professional to determine the underlying cause and appropriate treatment.