What was a goal of the five-power treaty, the four-power treaty and the nine-power treaty?
a. naval disarmament
b. japanese isolation
c. global trade barriers
d. chinese demobilization

The main goal of the Five-Power treaty, the Four-Power Treaty and the Nine-Power Treaty was naval disarmament. The correct option among all the options given in the question is option "a". These treaties were created so that the countries signing these treaties would respect the places occupies by the other signatories.