In the scientific name of organisms,which taxonomic category is written in lowercase letters?

Which of the following scientific names is written correctly according to the rules of binomial nomenclature?

Assertion $(S)$: Kingdom is the largest taxonomic category.
Reason $(R)$: The major group that includes all other groups is called a Kingdom.
$(a)$ Both $S$ and $R$ are true,and $R$ is the correct explanation of $S$.
$(b)$ Both $S$ and $R$ are true,but $R$ is not the correct explanation of $S$.
$(c)$ $S$ is true and $R$ is false.
$(d)$ $S$ is false and $R$ is true.
$(e)$ Both $S$ and $R$ are false.

Which of the following allows for the preparation of various geographical areas,flora,and fauna?

Which taxonomic category is formed by a group of closely related species?

If an organism is in the same class but not in the same family,then it may belong to the same