The paragraph contains several errors in the use of commas. Decide if the underlined selection needs to be revised or if it is correct as is. Beginning in 1998, Yo-Yo Ma one of the world's greatest celists initiated the Silk Road Project. This project has explored the creative, and cultural traditions of the countries along the ancient trade route known as the Silk Road. The land route extended, from Middle Eastern countries on the Mediterranean Sea to East Aslan countries bordering the Pacific Ocean. A chamber music ensemble called the Silk Road Ensemble has performed works specially created, or commissioned for the project. The 2006-2007 season was devoted to partnering with the City of Chicago the Chicago Symphony Orchestra and the Chicago Art Institute for a series of concerts, exhibits and other events. Professional workshops produced in collaboration with the Tanglewood Music Center Boston Symphony Orchestra, and Carnegie Hall have focused on the music practices, and traditions of Arerbaijan, China, India, and Iran. The Silk Road Project established an affiliation with the Rhode Island School of Design from 2005 to 2010 and beginning in 2010 with Harvard University Which option below would be an acceptable revision of the underlined selection?
a. extended: from Middle
b. extended from Middle
c. extended-from Middle
d. No revision is necessary