In short - from broadest to narrowest:
1. The use of glass and steel in modernist architecture.
2. The use of glass and steel by architect I.M. Pei
3. Architect I.M. Pei's contributions to the Glass Pyramid at the Louvre.
In detail:
Whenever you are trying to order something from broadest to narrowest you have to look at what information is being provided to you.
Think of this concept of taking a picture.
When you take a picture of something from a distance, you can get a broad range of objects in the picture before you zoom in.
If you focus or zoom in on a specific object, your scope becomes narrower and you see something more closely.
If you zoom further, you may be able to see some detailed features of the subject in question.
In the example provided, the statements are ordered from the most general statement to the most specific statement. You have the most detail in the narrowest example.
