Question

what is taxonomy? the broadest level of the taxonomic system the science of classifying living things a specific characteristic of a living thing a level of organization within a taxonomic system

Explanation:

Taxonomy is defined as the scientific discipline that focuses on classifying living organisms. The first option refers to a taxonomic rank (like domain), the third is a trait of an organism, and the fourth is a taxonomic level (like genus/species), so the correct definition is the science of classifying living things.

Answer:

The science of classifying living things