Can two different organisms have the same scientific name according to international rules?

Correct answer: No, each species has a unique scientific name

The correct answer is B: under the relevant international nomenclatural rules, a properly accepted scientific name is used uniquely for a species or taxon to prevent confusion. Organisms in the same genus may share the first word, but their complete binomial names must distinguish them. For example, two species can have the same genus but different specific epithets. A is wrong because belonging to the same genus does not permit identical complete names. C is wrong because the principle is not limited to plants. D is wrong because it is not limited to animals either. A useful careful point is that names are governed within particular nomenclatural codes and taxonomic changes can produce revisions, but the purpose of the rules is uniqueness and clarity. Memory cue: same genus may be shared; the complete binomial may not be identical.