**Core Concept**
Swimming pool conjunctivitis, also known as chlorine-induced conjunctivitis, is a type of irritant contact conjunctivitis caused by exposure to chlorine and other disinfectant chemicals found in swimming pools. This condition leads to inflammation of the conjunctiva, the thin membrane covering the white part of the eye and the inner eyelids.

**Why the Correct Answer is Right**
The correct answer is linked to the presence of chlorine and other disinfectants in swimming pools, which can cause irritation to the eyes. When individuals swim in chlorinated pools, the chlorine reacts with the tears to form chloramines, which are toxic to the conjunctiva. This leads to inflammation, redness, and discomfort in the eyes. The exact mechanism involves the release of histamine and other chemical mediators, which exacerbate the inflammatory response.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it does not directly relate to the cause of swimming pool conjunctivitis. While bacteria can cause conjunctivitis, the question specifically asks about swimming pool conjunctivitis, which is caused by chemical irritation.
* **Option B:** This option is incorrect because it refers to a different type of conjunctivitis caused by a viral infection. Viral conjunctivitis is not related to the chemical irritation caused by swimming pool disinfectants.
* **Option C:** This option is incorrect because it refers to a type of conjunctivitis caused by an allergic reaction. While allergies can cause conjunctivitis, the question specifically asks about swimming pool conjunctivitis, which is caused by chemical irritation, not an allergic reaction.

**Clinical Pearl / High-Yield Fact**
When swimming in chlorinated pools, it is essential to rinse your eyes with water after swimming to minimize the risk of developing swimming pool conjunctivitis. Additionally, using goggles or swimwear with built-in eye protection can also help reduce exposure to chlorine and other disinfectants.

**Correct Answer: D. Pseudomonas aeruginosa**