When the functioning of one or more or systems of the body is adversely affected, characterised by various sings and symtoms ,this is called

Options

A. Allergy
B. Toxicity
C. Immunity
D. Disease

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for a term that describes the adverse effect on the functioning of one or more body systems, characterized by various signs and symptoms.

2. **Analyzing the Options**:
- **Allergy**: This refers to hypersensitivity of the immune system to generally harmless substances. It does not encompass all adverse effects on body systems.
- **Toxicity**: This term relates to the harmful effects of substances on living organisms, but it does not specifically address the overall functioning of body systems.
- **Immunity**: This describes the body’s ability to fight off pathogens and does not relate to adverse effects or diseases.
- **Disease**: This term refers to a harmful deviation from the normal functioning of the body, often accompanied by specific signs and symptoms.

3. **Identifying the Correct Answer**: Based on the definitions analyzed, "disease" is the term that best fits the description provided in the question. It indicates a disruption in normal body functions, which is characterized by various signs and symptoms.

4. **Conclusion**: The correct answer to the question is **disease**.

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