What can excessive exposure to penta lead to?

Excessive exposure to pentachlorophenol (often referred to as "penta") can lead to various adverse health effects due to its toxicity. The correct choice highlights some of the common symptoms associated with overexposure, which include fever, headache, and profuse sweating. These symptoms are indicative of the body reacting to the harmful effects of the chemical, which can irritate the skin and respiratory system, and affect overall health.

Additionally, penta is recognized for its use in wood preservation, and those who work with it or are frequently exposed may be at risk for these negative health outcomes. Continuous or high-level exposure can lead to more severe health issues, making recognition of the symptoms crucial for safety and health monitoring among those who handle treated materials.

In contrast, the other options describe positive outcomes or conditions that are unlikely to be associated with overexposure to a toxic substance like penta. Improved physical health, increased concentration, and enhanced mood stability are not associated with the effects of exposure to harmful chemicals, emphasizing the importance of recognizing and managing risks in environments where such substances are present.