Which choice completes the text so that it conforms to the convention…

Source Texts

Text

Following the formation of the European Union (EU) that same year, the organizers of the 1992 Tour de France wanted the bike race to reflect the cross-national flow of people and trade that the EU had made possible. The resulting course was 2,500 miles long ______ seven separate borders of neighboring countries, modeled a vision of the EU's unifying aims.

Which choice completes the text so that it conforms to the conventions of Standard English?

and, crossed

and had crossed

and crossed

and, crossing