The purpose of using a formal binomial nomenclature in biology encompasses all of the provided answers:

- To avoid confusion caused by common names: Common names can vary across languages and regions, leading to ambiguity and confusion. Binomial nomenclature provides a standardized system that transcends language barriers and ensures clear and unambiguous communication.
- To classify organisms based on their evolutionary relationships: Binomial nomenclature reflects the hierarchical classification system in biology. It allows organisms to be grouped based on their evolutionary relationships, aiding in the organization and study of biodiversity.
- To communicate about a particular organism with precision and clarity: Binomial names provide a precise and universally recognized way to refer to a specific organism. They eliminate ambiguity and facilitate accurate communication among scientists.
- To provide a unique name for each living organism: Binomial nomenclature assigns a unique scientific name to each species, ensuring that no two organisms have the same name. This allows for accurate identification and differentiation of species.