Pls answer and also tell which ones

Solution:

The correct option is (c).
Taxonomical aids are the collections of samples or preserved organisms that help in extensive research for the identification of various taxonomic hierarchies. Taxonomic aids related to the preservation of specimens are:

• Herbarium: It is a store that houses a collection of preserved plant species. Plant specimens are preserved in form of herbarium sheets which are prepared by drying, pressing, and preserving the samples on sheets. 
• Biological museums: These are found in schools and colleges; like the biology laboratory that we find in our schools. In these museums, plants and animal species are preserved in jars and containers with the help of appropriate preservatives. They may also be dried and preserved.