Answer: The correct answer for the blank is- binomial nomenclature.
Carl Linnaeus was a Swedish botanist, zoologist, as well as physician who is considered as the father of modern taxonomy.
He discovered binomial nomenclature, which is the most modern system of naming life forms.
According to this nomenclature, life forms can be named using two words where first one depicts the genus and second depicts the species to which the organism belongs.
Example- Human beings are named as Homo sapiens ( homo is genus and sapiens is species)