I believe the answer is: c.the Camp David Accords
The Camp David Accords is an agreement which signed by the president of Egypt Anwar Sadat and the prime minister of Israel Menachem Begin as an effort to promote peaceful relation on the middle east.
The Balfour Declaration and the British Mandate was made to create a clear territorial separation for the Israeli citizens and Palestinian citizens, which might help in ending the conflict between the two.
