Option 4, Kingdom - phylum - class - order - family - genus - species, is the correct taxonomic hierarchy.

The taxonomic hierarchy is a system used to classify and categorize living organisms based on their similarities and relationships. It is organized into different levels or ranks, with each level representing a different classification category.

In the correct hierarchy, the highest level is the Kingdom, which is the broadest and most inclusive category. It represents major groups of organisms with similar characteristics.

Next is the phylum, which is a group of related classes that share certain characteristics. Within the phylum, we have classes, which represent a group of related orders.

Orders are groups of related families, and families are groups of related genera. Genera, or singular genus, are groups of related species.

Species is the lowest and most specific rank in the hierarchy. It refers to a group of individuals that can interbreed and produce fertile offspring.

Therefore, the correct taxonomic hierarchy is Kingdom - phylum - class - order - family - genus - species.