In which year did Linnaeus publish the famous tenth edition of his historic work Systema Naturae?

Correct answer: 1758

The correct answer is A, 1758. Carl Linnaeus published the tenth edition of *Systema Naturae* in 1758. This edition is historically important because it provided a widely accepted foundation for zoological scientific nomenclature and is treated as the starting point for the availability of many animal names under the zoological code. Option B, 1753, is associated especially with Linnaeus’s *Species Plantarum*, an important landmark for botanical nomenclature, so it is a common source of confusion. Option C, 1760, is not the required publication year. Option D, 1735, is the year of the first edition of *Systema Naturae*, not the tenth edition. Thus, remembering the distinction between 1735, the first edition, and 1758, the tenth edition, leads to A. Memory cue: “animals—tenth edition—1758.”