**Core Concept**
Stainless steel is a corrosion-resistant alloy of iron, chromium, and other elements. Its discovery and development involved the understanding of metallurgy and the properties of chromium, which forms a protective oxide layer on the surface of the metal, preventing corrosion.

**Why the Correct Answer is Right**
The correct answer is attributed to Harry Brearley, an English metallurgist who discovered stainless steel in 1913. Brearley was experimenting with various alloys to develop a corrosion-resistant material for the British military. He discovered that by adding 12% chromium to steel, he could create a material that resisted corrosion, which led to the development of stainless steel.

**Why Each Wrong Option is Incorrect**
* **Option A:** There is no historical evidence to suggest that any other notable figure discovered stainless steel.
* **Option B:** Although other researchers may have contributed to the development of stainless steel, there is no record of them being the first to discover the alloy.
* **Option C:** While Brearley's discovery was significant, it is not accurate to attribute the discovery of stainless steel to someone other than Harry Brearley.

**Clinical Pearl / High-Yield Fact**
The discovery of stainless steel by Harry Brearley is a notable example of the importance of metallurgy in medicine, particularly in the development of medical instruments and implants that require corrosion resistance.

**Correct Answer:** C. Harry Brearley.