## Core Concept
The treatment of acute iron poisoning involves several strategies, including supportive care, gastrointestinal decontamination, and specific antidotes. The goal is to reduce further absorption of iron and manage systemic toxicity. Chelating agents are crucial in binding iron and reducing its toxic effects.

## Why the Correct Answer is Right
Desferrioxamine (also known as deferoxamine) is a specific chelator used for treating acute iron poisoning. It binds with iron to form a stable complex that can be excreted by the kidneys, thereby reducing the toxic effects of iron. This makes option **D. Desferrioxamine** the correct answer as it is indeed used for treating acute iron poisoning.

## Why Each Wrong Option is Incorrect
- **Option A:** Activated charcoal is not effective in preventing the absorption of iron because iron does not bind well to charcoal. This makes it incorrect for the treatment of acute iron poisoning.
- **Option B:** Gastric lavage may be considered in the initial management to remove unabsorbed iron from the stomach but is not a definitive treatment.
- **Option C:** Supportive care, including fluids and monitoring, is crucial but not specific to chelation therapy.

## Clinical Pearl / High-Yield Fact
A key point to remember is that **deferoxamine** is the specific antidote for acute iron poisoning. Its use is critical in severe cases where chelation therapy is indicated to manage iron overload.

## Correct Answer: C. Activated charcoal.