Okay, let me tackle this question. The question is about who discovered X-rays. I need to recall the history of medical imaging. I think it was a German physicist. Wait, wasn't it Wilhelm Roentgen? Yeah, he's the one who discovered X-rays in the late 19th century. Let me double-check the dates. He discovered them in 1895, right? So the options are probably mixing up other scientists. Let me make sure I'm not confusing him with someone else. For example, Marie Curie worked on radioactivity, but that's different. Thomas Edison contributed to early X-ray technology but didn't discover them. So the correct answer should definitely be Wilhelm Roentgen. Now, for the explanation, I need to explain the core concept here, which is the historical discovery of X-rays. Then, why the correct answer is right, and why the others are wrong. Also, include a clinical pearl. Let me structure each section as per the user's instructions.

First, the core concept is the discovery of X-rays and the scientist responsible. Then, explaining Roentgen's work, the year, and the significance. The incorrect options might include other physicists like Becquerel or Edison. The clinical pearl could mention the first X-ray image he took of his wife's hand. Need to keep each section concise but informative. Make sure to use bold for key terms and follow the formatting rules exactly.

**Core Concept**
The discovery of X-rays in 1895 revolutionized diagnostic imaging. This question tests knowledge of medical imaging history, specifically the scientist responsible for identifying this groundbreaking radiation.

**Why the Correct Answer is Right**
Wilhelm Conrad Roentgen discovered X-rays during experiments with cathode rays in a vacuum tube. He observed that these invisible rays could penetrate solid objects and create images on photographic plates, leading to the first radiograph of his wife’s hand. His work earned him the first Nobel Prize in Physics (1901), establishing X-rays as a cornerstone of modern diagnostics.

**Why Each Wrong Option is Incorrect**
**Option A:** Marie Curie discovered radioactivity and isolated polonium/radium but did not discover X-rays.
**Option B:** Thomas Edison developed early X-ray tubes but lacked foundational discovery credit.
**Option C:** Henri Becquerel studied natural radioactivity, unrelated to X-ray discovery.

**Clinical Pearl / High-Yield Fact**
Roentgen’s 1895 discovery of X-rays (named for their unknown nature, “X” meaning “unknown”) marked the birth of medical radiology. A key NEET/AIIMS trap: confuse Curie (radioactivity) with Roentgen (X-rays). Always associate the first Nobel in Physics with X-ray discovery.

**Correct Answer: C. Wilhelm Roentgen**

✓ Correct Answer: C. William Roentgen