Read the text.
In the 1970s, architect I. M. Pei took on the difficult assignment of renovating and
updating the beautiful Louvre Palace in Paris without overpowering the original building.
The art museum in the centuries-old Louvre displayed Leonardo Da Vinci's Mona Lisa and
other famous works, but the building's layout was so confusing that tourists couldn't find
the entrances. It also needed more restrooms and a bigger cafeteria. Pei designed a large
central underground entrance and visitor center. He then added a glass pyramid above
the entryway. Although Pei's design faced initial criticism, today the pyramid is
considered a brilliant success-a landmark that complements the old palace without
interfering with it.
Which organizational structure does this text primarily use?
problem-solution
compare-contrast