Explanation:

To find the correct answer we will go through the meaning of all the given words.

1. green house - a glass building in which plants that need protection from cold weather are grown.

2 . nursery - a place where young plants and trees are grown for sale or for planting elsewhere.

3. warehouse - a large building where raw materials or manufactured goods may be stored prior to their distribution for sale.

4. herbarium - a systematically arranged collection of dried plants.

Hence herbarium is the most suitable word for substituting the group of words. Hence option 4 is the correct answer.