Which of the following is a type of toxin that affects the whole body?

The correct answer is Systemic Poisons, which are substances that, upon entering the body, spread throughout the system and affect multiple organs or systems. These toxins can disrupt normal physiological functions and lead to systemic health issues, as they tend to be absorbed into the bloodstream and transported to various parts of the body.

Anesthetics, while they can impact the central nervous system and entire body functions, primarily serve to induce a loss of sensation or consciousness and are designed for specific medical uses rather than being classified as toxins impacting health negatively. Irritants typically affect specific areas, often causing localized inflammation or discomfort, rather than having systemic effects on the body. Gray Water refers to mildly contaminated water that is not considered safe for drinking but does not fit into the category of toxins affecting the whole body as it is primarily a waste product.