The right option is; b) homo is the genus and sapiens is the species
A scientific name is the taxonomic name of an organism that is usually used by all scientists. Scientific names are usually derived from Greek or Latin and they are composed of two parts (the genus and species). The first part is called the genus (the name of the small group of similar organisms to which the organism belong) and the second part is the species (the specific epithet that differentiate a certain species from others that belong to the same genus). The scientific name homo sapiens which is for humans has homo as the genus and sapiens as the species.