Which of the following arrangements is in the correct ascending order?

Try to collect all the currently accepted meanings for the word 'species'. Discuss with your teacher the meaning of species in case of higher plants and animals on one hand and bacteria on the other hand.

The correct sequence of taxonomic hierarchy is

The suffix used for denoting a sub-family in biological classification is .........

Assertion $(S)$: Carolus Linnaeus is known as the father of taxonomy.
Reason $(R)$: Linnaeus proposed the binomial nomenclature system and conducted extensive studies in classification.
$(A)$ 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.

Which taxonomic category has its first letter written in capital case in binomial nomenclature?