An Arab nation which has not made formal peace with the state of Israel is A.) Egypt
B.) Jordan
C.) Syria

C. Syria

Explanation:

The other two are wrong.

Israel maintains full diplomatic relations with two of its Arab neighbours, Egypt and Jordan, after signing peace treaties in 1979 and 1994 respectively.

Other more recent updates on diplomatic relations:

In 2020, Israel signed agreements establishing diplomatic relations with four Arab League countries, Bahrain, the United Arab Emirates, Sudan and Morocco.

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