Which institution typically maintains a museum?

Which of the following taxonomical aids is being described by the given statements $(i-iv)$?
$(i)$. They are generally established in educational institutes.
$(ii)$. They have collections of preserved plant and animal specimens for study and reference.
$(iii)$. Insects are preserved in boxes after collecting,killing,and pinning.
$(iv)$. They often have collections of skeletons of animals too.

Assertion $A$: Herbaria provide keys for preparing modern taxonomic systems.
Reason $R$: Herbaria provide facilities for taxonomic research.
Which option is correct for Assertion $A$ and Reason $R$?

Which step is performed after drying of plant specimens in a herbarium?

Which of the following places is used for storing animals in a living form?

Why is the fumigation process carried out in a herbarium?