The correct option is A Two words in name of species
Binomial nomenclature is a two-term naming system that uses two different terms to name the species, plants, animals and living organisms. Binomial nomenclature is also known as Binary nomenclature. The two terms consists of a generic epithet which is genus (category) of that species, and specific epithet which indicates the species itself. This two-terms naming system can also use some other different languages to create such scientific names. These scientific names are unique and help in identifying organisms analyser in the world.