Questions: The formal system for organizing, classifying and naming living this is:

The answer is the third one: taxonomy.

Explanation for each option:

• Nomenclature: This refers specifically to the system of naming organisms, but it does not encompass the broader aspects of organizing and classifying them.
• Classification: This is the process of grouping organisms based on shared characteristics, but it is only one part of the broader system.
• Taxonomy: This is the formal system that includes the processes of classification, nomenclature, and identification. It is the most comprehensive term that fits the description given in the question.
• Binomial system: This is a specific method within taxonomy for naming species using two terms (genus and species), but it does not cover the entire system of organizing and classifying living things.
• Identification: This refers to the process of determining what an organism is, but it is only one part of the broader system.

Summary: The formal system for organizing, classifying, and naming living things is taxonomy.