**Core Concept**
Skin cancer is a complex disease influenced by a combination of genetic, environmental, and lifestyle factors. The predisposing factors can be broadly categorized into intrinsic (genetic) and extrinsic (environmental) factors.

**Why the Correct Answer is Right**
Individuals with fair skin, light eye color, and a history of sunburns are at an increased risk of developing skin cancer. This is due to their reduced ability to produce melanin, which provides natural protection against ultraviolet (UV) radiation from the sun. The UV radiation can cause DNA damage and mutations in skin cells, leading to cancerous changes. Additionally, a family history of skin cancer, particularly melanoma, is also a significant risk factor.

**Why Each Wrong Option is Incorrect**
**Option A:** Genetic predisposition is a correct answer, but it's incomplete as it doesn't specify the type of genetic predisposition (e.g., BRCA2 mutations are associated with melanoma).

**Option B:** Smoking is a risk factor for several types of cancer, but it's not directly linked to skin cancer. However, smoking can weaken the immune system, making it harder to fight off skin cancer.

**Option C:** A diet rich in fruits and vegetables can help prevent skin cancer, but it's not a predisposing factor. In fact, a diet high in antioxidants can help protect against UV-induced damage.

**Option D:** This option is blank, so I'll assume it's not relevant to the question.

**Clinical Pearl / High-Yield Fact**
The "ABCD Rule" is a useful mnemonic to remember the signs of melanoma: Asymmetry, Border irregularity, Color variation, and Diameter greater than 6mm.

**Correct Answer:** D.