Leaders from different parts of the world took part

  in the discussion    the international treaty.

A. which leads to   B. leading to   C. led to     D. led to have

Leaders from different parts of the world took part in the discussion   the international treaty.

1. A.
   which leads to
2. B.
   leading to
3. C.
   led to
4. D.
   led to have

Leaders from different parts of the world took part
in the discussion   the international treaty.