**Core Concept**
Retinal detachment is a medical emergency where the retina separates from the underlying retinal pigment epithelium, leading to vision loss. The common causes and types of retinal detachment are crucial for diagnosis and treatment.

**Why the Correct Answer is Right**
The most common type of retinal detachment is rhegmatogenous retinal detachment, accounting for approximately 85-90% of cases. This occurs due to the formation of retinal tears or holes, allowing fluid to accumulate under the retina and causing it to detach. The pathophysiology involves the weakening of the retinal tissue, often due to trauma, age-related degeneration, or retinal vascular diseases, which leads to the formation of retinal breaks. The vitreous gel in the eye can also contract and pull on the retina, causing tears or holes.

**Why Each Wrong Option is Incorrect**
**Option A:** Tractional retinal detachment is the second most common type, but it is less common than rhegmatogenous retinal detachment. It occurs due to fibrovascular proliferation and scarring, often in diabetic retinopathy.
**Option B:** Exudative retinal detachment is a rare type, accounting for approximately 5-10% of cases. It occurs due to the accumulation of fluid under the retina, often in conditions such as tumors, inflammatory diseases, or vascular diseases.
**Option C:** Choroidal folds are not a type of retinal detachment but a condition where the choroid layer of the eye is folded, often due to conditions like high myopia.

**Clinical Pearl / High-Yield Fact**
Rhegmatogenous retinal detachment is often associated with myopia, age-related macular degeneration, and ocular trauma. Early detection and treatment are crucial to prevent permanent vision loss.

**Correct Answer:** C.