The National Geographic Society's electronic database, available free of cost to researchers affiliated with government think-tanks or university study
centers, originally stored in microfiche sheets that were manually accessed through the Society's free access facilities, but is now accessible through remote data access services.
A) centers, originally stored in microfiche sheets that were manually accessed through the Society's free access facilities, but is -
A fragmented sentence since verb for the subject "Database" is missing. Hence Incorrect. B) centers, while it had originally been stored in microfiche sheets that were manually accessed through the Society's free access facilities,
Grossly Incorrect.C) centers
stored originally in microfiche sheets that were manually accessed through the Society's free access facilities
A fragmented sentence since verb for the subject "Database" is missing. Placement of STORED changes the original intent & logically incorrect since the option now conveys that Study centers were stored in microfiche sheets.. "But" should be used in the end to maintain contradiction. Hence Incorrect.D) centers, was originally stored in microfiche sheets manually accessed through the Society's free access facilities but is
CORRECTE) centers stored originally in microfiche sheets that were manually accessed through the Society's free access facilities but is
A fragmented sentence since verb for the subject "Database" is missing. Placement of STORED changes the original intent & logically incorrect since the option now conveys that Study centers were stored in microfiche sheets. Hence Incorrect.