The correct option is B Panthera tigris
Carolus Linnaeus introduced binomial nomenclature where the scientific name consists of a generic name and a specific name. There are some rules to be followed while writing the scientific names of organisms. There exist two parts of a scientific name. The genus name starts with a capital letter and is written first. The genus name is followed by the specific name and starts with a small letter. When the names are handwritten, they are underlined separately or italicized if typed. Thus, Panthera tigris is the correct option.