**Core Concept**
In chalcosis, a condition resulting from the deposition of copper in the eye, cataract formation is a known complication. The type of cataract associated with chalcosis is characterized by the presence of copper deposits within the lens. This condition leads to the disruption of the lens architecture and the disruption of the normal lens function.

**Why the Correct Answer is Right**
The type of cataract in chalcosis is a **sunflower cataract**. This type of cataract is characterized by the deposition of copper in a petaloid or sunflower-like pattern within the lens. The copper deposits in the lens lead to the disruption of the lens fibers and the formation of a cataract. The sunflower cataract is a classic sign of chalcosis and is often associated with a history of intraocular copper foreign body.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because the sunflower cataract is a specific type of cataract associated with chalcosis, not a general term for all types of cataracts.
* **Option B:** This option is incorrect because the snowflake cataract is a type of cataract associated with diabetes mellitus, not chalcosis.
* **Option C:** This option is incorrect because the posterior subcapsular cataract is a type of cataract associated with various conditions, including steroid use and radiation exposure, but it is not specifically associated with chalcosis.

**Clinical Pearl / High-Yield Fact**
The sunflower cataract is a classic sign of chalcosis and is often associated with a history of intraocular copper foreign body. Remember that the presence of a sunflower cataract in a patient with a history of eye trauma or intraocular surgery should raise suspicion for chalcosis.

**Correct Answer:** C. Sunflower cataract.