Directions: Identify the incorrect sentence or sentences.

A. Many teenagers will turn off their friends and family to help them decide about college. B. The increasing popularity of the motorcycle as a convenient, economical form of transportation has been just short of astounding. C. An NGO friend had arranged the visit to a village where his project had begun working. D. It is believed that the under privileged people have registered no progress in the last four and a half decades.