**Core Concept:** The central tendon of the diaphragm is the area where the pleural and peritoneal attachments of the diaphragm meet. It is essential to understand the development of this structure for proper understanding of respiratory system anatomy.

**Why the Correct Answer is Right:** The central tendon of the diaphragm develops from the fusion of the three pleural footplates (from the primary pleura) and the two peritoneal footplates (from the primary peritoneum). This fusion occurs in the embryonic period, specifically between the 6th and 8th weeks of gestation.

**Why Each Wrong Option is Incorrect:**

A. Pleural and peritoneal footplates do not fuse into the central tendon in this option. Instead, they remain separate structures contributing to the formation of the diaphragm.
B. This option also suggests that the central tendon develops from pleural and peritoneal membranes without mentioning the fusion process.
C. The correct answer states that the central tendon develops from the fusion of pleural and peritoneal footplates, which is incorrect in this context.
D. This option focuses on the pleural and peritoneal footplates, but it does not address the fusion process that leads to the formation of the central tendon.

**Clinical Pearl / High-Yield Fact:** Understanding the development of the central tendon of the diaphragm is crucial for assessing respiratory system abnormalities, such as congenital diaphragmatic hernia, which can lead to respiratory distress and neonatal mortality. A correct understanding of the embryological development can help in diagnosing and treating these conditions.