## Core Concept
A normal electrocardiogram (ECG or EKG) represents the electrical activity of the heart over a period of time using electrodes placed on the skin. It is characterized by several key components, including the P wave, QRS complex, T wave, and PR and QT intervals. These components reflect the depolarization and repolarization of the atria and ventricles.

## Why the Correct Answer is Right
The correct answer, , indicates that in a normal ECG, the **P wave is positive in lead II**. This is because the P wave represents atrial depolarization, which normally occurs in a caudocranial (inferior to superior) direction. As a result, the P wave is upright (positive) in leads I, II, and V4-V6, reflecting the normal direction of atrial depolarization.

## Why Each Wrong Option is Incorrect
* **Option A:** - This option is incorrect because a negative P wave in lead II suggests abnormal atrial depolarization, often seen in conditions like atrial ectopic beats originating from the lower atria or in certain types of cardiac arrhythmias.
* **Option B:** - This option does not provide a specific statement about ECG characteristics and is therefore not directly assessable as correct or incorrect without further context.
* **Option C:** - Similarly, without a specific statement, this option cannot be directly evaluated.

## Clinical Pearl / High-Yield Fact
A key point to remember is that in a normal ECG, the **P wave is positive in lead II** and also in leads I, V4-V6. A negative P wave in lead II is often indicative of an ectopic atrial rhythm or a more serious cardiac condition. Always assess the P wave axis and its correlation with the QRS complex to understand the cardiac rhythm accurately.

## Correct Answer: D.