Identification is the process of

Options

A. Naming living organism
B. Recognising the characteristic features of an organism
C. Categorising living organism
D. Discovering new species of plants and animals

Explanation

### Step-by-Step Solution:

1. **Understanding Identification**:
- Identification is a term commonly used in taxonomy, which is the science of naming, describing, and classifying organisms.

2. **Definition of Identification**:
- The process of identification involves recognizing and assigning a pre-existing taxon (a group of organisms) to an individual organism based on its characteristics.

3. **Characteristic Features**:
- The identification process relies on the characteristic features of the organism. These features help in determining to which existing taxon the organism belongs.

4. **Evaluating Options**:
- **Option A**: Naming living organisms - This is incorrect as naming is referred to as nomenclature, not identification.
- **Option B**: Recognizing the characteristic feature of an organism - This is correct since identification involves recognizing features to assign a taxon.
- **Option C**: Categorizing living organisms - This is incorrect as categorization falls under classification, which is broader than identification.
- **Option D**: Discovering new species of plants and animals - This is also incorrect as discovery is not the same as identification.

5. **Conclusion**:
- The correct answer is **Option B**: Recognizing the characteristic feature of an organism.