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

Sapindales is a

Which of the following is not a broad category in the taxonomic hierarchy?

The branch connected with nomenclature,identification,and classification is:

Which of the following statement$(s)$ is/are true?
$A.$ An organism represents/occupies a place or position in the system of classification.
$B.$ One specific epithet may be present in different genera representing different species.
$C.$ Human belongs to $Homo$ species.
$D.$ Animals,mammals,and dogs represent the taxa at the same level.
Options:

The suffix $-oideae$ is used for