What is the mechanism that provides taxonomical information?

$S$ Statement: Insects are caught,killed,and pinned in insect boxes for preservation.
$R$ Reason: Large animals like birds and mammals are usually preserved by stuffing.
$(a)$ 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.

What kind of understanding is provided by the members in a botanical garden?

Which classification system is used in most of the world's prominent herbaria?

Which of the following facilities is provided in a museum?

The contrasting characteristics generally in a pair used for identification of animals in a Taxonomic Key are referred to as: