When a natural predator (living organism) is applied on the other pathogen organisms to control them, this process is called as

Options

A. biological control
B. genetic engineering
C. arifificial control
D. confusion technique

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about a process where a natural predator (a living organism) is used to control other pathogen organisms.

2. **Identifying the Process**: The process of using a natural predator to manage or control harmful organisms is a method of pest management.

3. **Defining Biological Control**: This method is known as "biological control". It involves the use of natural predators, parasites, or pathogens to reduce the population of harmful organisms such as pests, weeds, or diseases affecting crops.

4. **Explaining the Concept**: Biological control is a component of integrated pest management (IPM), which is a strategy that combines different management approaches to minimize the use of harmful chemicals while effectively controlling pest populations.

5. **Conclusion**: Therefore, the process of applying a natural predator to control pathogen organisms is called biological control.

**Final Answer**: Biological control.

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