Read the following passage carefully and answer the questions given below it. Certain words/phrases are printed in bold to help you locate them while answering some of the questions
What action have the UN and other international groups taken to block the entry of 'Conflict Diamonds' into the diamond trade?
A. They have introduced a certification procedure known as the 'Kimberley Process'.
B. They are fighting against the rebel groups in West Africa.
C. They have stopped importing diamonds from West Africa.