Tachycardia is `:-`

Options

A. abnormal heart rhythm
B. high blood pressure
C. slow rate of heartbeat
D. rapid rate of heartbeat

Answer

To solve the question regarding tachycardia, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Term "Tachycardia":**
- Tachycardia is a medical term that refers to a condition where the heart beats faster than normal.

2. **Identify the Options:**
- The options provided are:
- A) Abnormal heart rhythm
- B) High blood pressure
- C) Slow rate of heartbeat
- D) Rapid rate of heartbeat

3. **Analyze Each Option:**
- **Option A:** Abnormal heart rhythm - While tachycardia can be considered an abnormal rhythm, it specifically refers to the speed of the heartbeat rather than the rhythm itself.
- **Option B:** High blood pressure - This is not related to the rate of heartbeat; tachycardia does not mean high blood pressure.
- **Option C:** Slow rate of heartbeat - This is the opposite of what tachycardia refers to, as it indicates bradycardia (slow heartbeat).
- **Option D:** Rapid rate of heartbeat - This directly describes tachycardia, which is characterized by an increased heart rate.

4. **Conclusion:**
- Based on the analysis, the correct answer is **Option D: Rapid rate of heartbeat**. Tachycardia specifically indicates that the heart is beating faster than normal.

### Final Answer:
Tachycardia is **D) Rapid rate of heartbeat**.

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