Species/taxon represents basic taxonomic category.

Explanation

### Step-by-Step Solution:

1. **Understanding Taxonomy**: Taxonomy is the science of classification of living organisms. It involves organizing species into hierarchical categories based on shared characteristics.

2. **Defining Taxon**: A taxon (plural: taxa) is any group of organisms that is given a name. This can include categories such as kingdom, phylum, class, order, family, genus, and species. Each of these categories is a taxon.

3. **Identifying the Basic Taxonomic Category**: Among all the taxonomic categories, the species is considered the most fundamental or basic unit. It represents a group of individuals that can interbreed and produce fertile offspring.

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