**Core Concept**
Kartagener syndrome is a rare genetic disorder characterized by the combination of situs inversus, chronic sinusitis, and bronchiectasis. It is caused by mutations in the DNAI1 or DNAH5 genes, which encode for dynein arms essential for ciliary function.

**Why the Correct Answer is Right**
The correct answer is related to the pathophysiology of Kartagener syndrome. The disorder is associated with defective ciliary function, leading to impaired mucociliary clearance and recurrent respiratory infections. Situs inversus, a condition where the internal organs are reversed or mirrored from their normal positions, is a hallmark of Kartagener syndrome. Chronic sinusitis and bronchiectasis are also common features due to the abnormal ciliary function.

**Why Each Wrong Option is Incorrect**
* **Option A:** Bronchiectasis is a feature of Kartagener syndrome, so this option is incorrect.
* **Option B:** Chronic sinusitis is a common feature of Kartagener syndrome, making this option incorrect.
* **Option D:** Situs inversus is a characteristic feature of Kartagener syndrome, so this option is incorrect.

**Clinical Pearl / High-Yield Fact**
The "ciliary dyskinesia" associated with Kartagener syndrome can be remembered using the mnemonic "CART": Cilia dysfunction, Asthma, Recurrent infections, and Situs inversus.

**Correct Answer: D. Situs inversus is a characteristic feature of Kartagener syndrome.