## Core Concept
The question tests the knowledge of parasitic infections, specifically the mode of entry of certain larvae into the human body. The correct answer involves a parasite whose larvae can penetrate human skin to initiate infection.

## Why the Correct Answer is Right
The correct answer, **Hookworm larvae**, infect humans by penetrating through the skin. This typically occurs when larvae present in contaminated soil come into contact with human skin, often barefoot walking in areas where the soil is contaminated with feces containing hookworm eggs. Once the larvae penetrate the skin, they can enter the bloodstream and travel to the lungs and eventually to the intestines, where they mature into adult worms.

## Why Each Wrong Option is Incorrect
- **Option A:** This option is not provided, but based on the format, let's assume it's incorrect because it does not accurately describe hookworm larvae or another correct method of infection.
- **Option B:** Similarly, without the content, we can't directly assess, but if it doesn't align with the lifecycle and infection method of hookworms or another parasite that infects through skin penetration, it's incorrect.
- **Option C:** This would be incorrect if it suggests a different mode of infection or a different parasite that does not primarily infect humans through skin penetration.
- **Option D:** This option is also incorrect as per the question; assuming it does not correctly represent hookworm larvae or another parasite infecting through skin.

## Clinical Pearl / High-Yield Fact
A key point to remember is that **hookworm infection** is a significant cause of iron-deficiency anemia in developing countries due to the chronic blood loss it causes in the intestines. The infection is often associated with poor hygiene and walking barefoot in contaminated areas.

## Correct Answer: C. Hookworm larvae.