**Core Concept**
The question tests knowledge of the electromagnetic spectrum, specifically the **ultraviolet (UV) range** and its subdivision into UVA, UVB, and UVC, based on wavelength. UVB rays are a component of **solar radiation** that plays a significant role in human health and disease.

**Why the Correct Answer is Right**
UVB rays have a shorter wavelength than UVA rays, ranging from **290 to 320 nanometers**. This range is crucial because UVB rays are largely responsible for causing **sunburn** and play a key role in the synthesis of **vitamin D** in human skin. The specific wavelength of UVB rays is important for understanding its effects on human health.

**Why Each Wrong Option is Incorrect**
**Option A:** Is incorrect because this range corresponds to UVA rays, which have a longer wavelength.
**Option C:** Is incorrect as it falls outside the UV range.
**Option D:** Also incorrect, as it does not match the UVB range.

**Clinical Pearl / High-Yield Fact**
Remembering the UVB range is crucial for understanding **skin cancer prevention** and **vitamin D metabolism**. UVB rays are a primary cause of **DNA damage** in skin cells, leading to skin cancer.

**Correct Answer:** C. 290-320 nm