## Core Concept
SARS (Severe Acute Respiratory Syndrome) is a respiratory illness caused by a coronavirus, specifically SARS-CoV. It was first identified in 2002 and led to a global outbreak in 2003. The disease is characterized by its high transmission rate and severity, particularly in older adults.

## Why the Correct Answer is Right
The correct statements about SARS include its causative agent being a coronavirus, its mode of transmission primarily through respiratory droplets, and its global impact. Without the specific options provided, we can infer that accurate statements about SARS would involve its viral etiology, clinical presentation (such as fever, cough, and respiratory distress), and epidemiological features (like its origin in China and spread to multiple countries).

## Why Each Wrong Option is Incorrect
- **Option A:** Without specific details on option A, we can't directly address its inaccuracies. However, any statement contradicting established facts about SARS (e.g., claiming it's caused by a bacterium or spread mainly through vectors) would be incorrect.
- **Option B:** Similarly, without specifics, if option B suggests SARS has a low mortality rate or is primarily spread through contaminated water, it would be incorrect given the known high mortality rate and respiratory droplet transmission.
- **Option C:** If option C provides an incorrect detail about SARS, such as its year of emergence or primary symptoms, it would be wrong based on verified historical and medical data.

## Clinical Pearl / High-Yield Fact
A key point to remember about SARS is its potential for severe respiratory complications and its ability to spread rapidly in a globalized world. The disease highlighted the importance of public health preparedness and the need for rapid identification and isolation of cases to prevent widespread outbreaks.

## Correct Answer Line
**Correct Answer: D.**