Why were scientific names needed instead of local or common names of organisms?

Correct answer: Because local names change with location

Correct answer: A. Local or common names are different in different regions, languages and communities. The same organism may have several local names, while one local name may sometimes be used for different organisms. This creates confusion when people from different places communicate about biology. Scientific names provide a standard, internationally understood name based on accepted nomenclature rules. B is wrong because difficulty of memorising is not the scientific reason; scientific names may also be unfamiliar at first. C is wrong because scientific names are not necessarily shorter than common names. D is too absolute: a local name can be useful and meaningful within its community, but it is not globally standardised. The important idea is uniform communication, not replacement of local culture. Memory cue: common names vary by place; scientific names create one common reference.