**Core Concept**
Kawasaki disease is an acute, febrile vasculitis of unknown etiology primarily affecting children, characterized by inflammation of blood vessels (vasculitis) and potential coronary artery complications. The treatment of choice aims to reduce inflammation and prevent cardiovascular sequelae.

**Why the Correct Answer is Right**
The treatment of choice for acute Kawasaki disease involves administering intravenous immunoglobulin (IVIG) to reduce inflammation and prevent coronary artery complications. IVIG works by neutralizing cytokines and other inflammatory mediators, thereby reducing the severity of the inflammatory response. Additionally, aspirin is given in two phases: high-dose aspirin during the acute phase to control fever and inflammation, and low-dose aspirin during the subacute phase to prevent coronary artery thrombosis.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect as it does not specify the correct treatment for Kawasaki disease. Corticosteroids may be used in some cases, but they are not the primary treatment of choice.
* **Option B:** This option is incorrect as it does not mention the use of IVIG, which is the cornerstone of treatment for Kawasaki disease.
* **Option C:** This option is incorrect as it does not specify the correct dose and duration of aspirin treatment.

**Clinical Pearl / High-Yield Fact**
The American Heart Association recommends administering IVIG within 10 days of the onset of fever to reduce the risk of coronary artery complications in Kawasaki disease.

**Correct Answer:** C. Intravenous immunoglobulin (IVIG) and high-dose aspirin.