**Core Concept**
Polio, caused by the poliovirus, is a highly infectious disease that leads to acute flaccid paralysis (AFP) due to the destruction of motor neurons in the anterior horn of the spinal cord.

**Why the Correct Answer is Right**
The correct answer is related to the pathophysiology of polio, where the poliovirus enters the body through the gastrointestinal tract and then invades the motor neurons in the spinal cord and brainstem. The virus causes the destruction of these neurons, leading to muscle weakness and paralysis. This destruction is due to the virus's ability to replicate within the neurons and trigger an immune response that results in the death of the infected cells.

**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because polio does not primarily affect the peripheral nerves but rather the central nervous system, specifically the motor neurons in the spinal cord.
**Option B:** Incorrect because while polio can cause muscle weakness, it does not primarily cause muscle atrophy as seen in conditions like muscular dystrophy.
**Option C:** Incorrect because polio does not primarily cause sensory symptoms like numbness or tingling as seen in conditions like peripheral neuropathy.

**Clinical Pearl / High-Yield Fact**
In polio patients, the presence of a high fever, muscle pain, and a history of recent gastrointestinal illness can be indicative of the disease, and prompt medical attention is crucial to prevent long-term complications.

**Correct Answer:** D.