Answer: d. binominal nomenclature.
Explanation: In binomial nomenclature, the genus is always listed first and capitalized while the species is always listed second and is in lowercase.
The naming system mentioned in the given question is binomial nomenclature.
It is the biological system of naming the organisms in which the name comprises two terms. In this, the first term demonstrates the genus, and the second term demonstrates the species of the organism.
Therefore, in the given question, Canis refers to the genus, while lupus, latrans, and familiaris signifies the species.
Thus, the correct answer is option d, that is, binomial nomenclature.
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