The naming and classification of living organisms are based on what?

The process of describing an organism accurately in association with its nomenclature is known as .........

Define the following terms:
$(i)$ Variations
$(ii)$ Nomenclature

Fill in the blanks $A$ and $B$ in the following taxonomic hierarchy:
Kingdom $\rightarrow$ Phylum $\rightarrow$ $[A]$ $\rightarrow$ Order $\rightarrow$ $[B]$

Assertion $(A)$: Linnaeus is known as the father of taxonomy.
Reason $(R)$: Linnaeus developed the binomial nomenclature system for the scientific naming of organisms.
Which option is correct for Assertion $(A)$ and Reason $(R)$?

Which of the following statements is correct regarding a species?