What did Linnaeus' system of naming organisms ensure?
a. Two different organisms never end up with the same genus and species name.
b. Two different organisms have the same genus and species name if they are closely related.
c. The genus name is different for closely related species.
d. The species name is the same for each organism in a genus.

Binomial nomenclature is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms. This system, developed by Carl Linnaeus, ensures that each species has a unique and universally accepted name, consisting of the genus name followed by the species name.

In biological classification, the genus is a rank used in the hierarchical classification of organisms, above species and below family. The species name is the second part of the binomial nomenclature and identifies the specific organism within the genus. This system prevents confusion by ensuring that no two species have the same genus and species name.

The taxonomic hierarchy is a system of classification that organizes living organisms into nested groups based on shared characteristics. It includes several ranks such as domain, kingdom, phylum, class, order, family, genus, and species. Linnaeus' system uses this hierarchy to ensure that closely related organisms are grouped under the same genus, while distinct species have unique names.