Classification is a taxonomical system of identification, nomenclature and arrangement of the unidentified organism in taxonomical categories based on the similarity of the characters.
This method is used in the identification of new species by comparing the characters with other identified species based on the similarities which are then arranged into taxonomical categories and nomenclature method is performed thereafter to name the unidentified organism.
Thus, options 2 and 4 which include identification and nomenclature are the correct options.
As in printing a book, if there is a slight defect in the mutation, it will be copied to every other mutation, just like a grammatical error in a book.