What is one potential physiological effect of chemical agents?

The correct answer encompasses a range of potential physiological effects that chemical agents can have on the human body, highlighting the broad spectrum of their impact.

Skin irritation is a common response to many chemical agents, which can cause reactions that vary from mild irritation and redness to severe burns depending on the agent's nature and exposure duration.

Increased heart rate is another effect, often a response to stress or shock induced by exposure to harmful substances. The body reacts to chemical exposure through a fight-or-flight response, which can elevate heart rate as part of preparing the body to deal with perceived threats.

Respiratory distress is particularly significant, as many chemical agents are designed to affect the respiratory system directly. This distress can manifest as difficulty breathing, coughing, or choking, indicating the potential severity of exposure.

By acknowledging that all these symptoms can arise from chemical agent exposure, the choice that includes all of the above accurately reflects the multifaceted risks posed by such agents and the need for comprehensive awareness and preparation to mitigate their effects.