When symptoms appear over a long period of time due to repeated exposures to slightly toxic materials; this is known as ....

• A. Acute poisoning
• B. Chronic poisoning
• C. Allergic reaction
• D. Sensitization

Answer: (B)

The idea being tested is how repeated, low-level exposures can lead to symptoms that develop gradually over time. When people are exposed to slightly toxic materials repeatedly, the body accumulates a burden, and the effects surface after a long period. This slow, progressive pattern is what we call chronic poisoning. It contrasts with acute poisoning, where symptoms appear quickly after a single high-level exposure. Chronic poisoning often starts with subtle signs—fatigue, headaches, dizziness, or concentration problems—and may worsen as exposure continues. In the context of pesticides, ongoing low-level contact can repeatedly stress organs like the liver, kidneys, and nervous system, leading to these enduring symptoms. The other terms don’t describe the timing and buildup this question highlights: an allergic reaction is an immune response that can occur after exposure, and sensitization is the process of becoming sensitive to a substance, not the long-term outcome of repeated exposure.