**Core Concept**
Faecal culture is a diagnostic tool used to identify pathogens causing gastrointestinal infections. Routine faecal culture typically involves the isolation of common enteric pathogens such as Escherichia coli, Salmonella, Shigella, and Campylobacter.

**Why the Correct Answer is Right**
In routine faecal culture, **E. faecalis** is not typically isolated, as it is a common inhabitant of the human gut and is not usually considered a pathogen. The primary focus of routine faecal culture is on identifying diarrheagenic bacteria such as **E. coli** (enterotoxigenic, enteroinvasive, enterohemorrhagic, and enteroaggregative), **Salmonella**, **Shigella**, and **Campylobacter**. These pathogens cause significant gastrointestinal disease and are of clinical concern.

**Why Each Wrong Option is Incorrect**
**Option A:** Not provided.
**Option B:** Not provided.
**Option C:** Not provided.
**Option D:** Not provided.

**Clinical Pearl / High-Yield Fact**
When ordering a faecal culture, it's essential to consider the clinical context, including the patient's symptoms, travel history, and potential exposure to contaminated food or water. This information can guide the selection of relevant pathogens and improve the yield of the culture.

**Correct Answer: D. E. faecalis**