The correct answer is A) it made the case stronger by showing the Palestinians were willing to live peacefully alongside Israelis.
The statement that best explains how the change by Palestinians from violence to negotiation affected their case for independence is "it made the case stronger by showing the Palestinians were willing to live peacefully alongside Israelis."
The Palestinian National Council gather in Argelia on November 15, 1988, to proclaim the independent state of Palestine in East Jerusalem, the Gaza Strip, and the West Bank. The declaration implicitly recognized the state of Israel, although it never mentions it.
The other options of the question are B) it made the case weaker by showing that Palestinians were unwilling to live peacefully alongside Israelis, C) it made the case stronger by showing the Palestinians were willing to recognize Israel's right to exist, and D) it made the case weaker by showing that Palestinians were willing to recognize Israel's right to exist.
