**Core Concept**
The doctrine being tested is a legal principle used to determine liability in medical negligence cases, particularly when there's a breach of duty owed to the patient. This doctrine holds individuals or organizations accountable for their actions, emphasizing the importance of adherence to established standards of care.

**Why the Correct Answer is Right**
The doctrine of **Res Ipsa Loquitur** (Latin for "the thing speaks for itself") applies when an accident would not have occurred without negligence. In this scenario, the use of hot bottles for treatment is a clear deviation from standard medical practices, and the resulting burns injury suggests a breach of duty. This doctrine is often invoked when the injury is so unusual that it would not have happened without negligence, making it a key concept in medical negligence cases.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not relevant to the scenario, as it does not address the doctrine of negligence in medical cases.
* **Option B:** This option is incorrect because it does not apply to the situation described, which involves a clear breach of duty.
* **Option C:** This option is not applicable, as it refers to a different legal concept that is not related to the doctrine being tested.

**Clinical Pearl / High-Yield Fact**
When considering medical negligence cases, remember that **Res Ipsa Loquitur** is often invoked when the injury is so unusual that it would not have happened without negligence. This doctrine emphasizes the importance of adhering to established standards of care to avoid liability.

**Correct Answer: D. Res Ipsa Loquitur**