**Core Concept**
The normal bacterial flora of the conjunctiva consists of various microorganisms that inhabit the ocular surface and maintain a delicate balance. This balance is crucial for preventing excessive microbial growth and potential infections. The conjunctival flora includes both aerobic and anaerobic bacteria.

**Why the Correct Answer is Right**
The conjunctival flora is predominantly composed of staphylococcal species, particularly _Staphylococcus epidermidis_. These bacteria adhere to the conjunctival epithelial cells and colonize the ocular surface. The presence of these bacteria helps to prevent the overgrowth of more pathogenic organisms and promotes a healthy ocular environment. Additionally, the conjunctival flora plays a role in the development of the immune system, particularly in the production of IgA antibodies.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not specifically mention staphylococcal species, which are the primary inhabitants of the conjunctival flora.
**Option B:** This option is incorrect because it includes _Neisseria gonorrhoeae_, a pathogenic bacterium that can cause conjunctivitis, rather than a normal flora organism.
**Option C:** This option is incorrect because it includes _Pseudomonas aeruginosa_, an opportunistic pathogen that can cause ocular infections, rather than a normal flora organism.

**Clinical Pearl / High-Yield Fact**
The normal conjunctival flora is a dynamic entity that can be influenced by various factors, including environmental conditions, hygiene practices, and individual immune status.

**Correct Answer: C. Staphylococcus epidermidis**