LIIO JUVU. Philadelphia has distinguished itself by preserving its old buildings and the incorporation of nev
structures.
Which revision corrects the faulty parallelism?
Philadelphia has distinguished itself by preserving its old buildings and
incorporating its new structures.
Philadelphia distinguishes itself, preserves its old buildings, and the
incorporation of new structures.
Philadelphia has not only distinguished itself but also preserves its old
buildings and incorporates new structures.
Philadelphia has distinguished itself by incorporating its new
structures and the preservation of old buildings.