ik i posted this 3 times just im boredfirst to friend me cause im bored get's brainiest no im not doing this cause i need friends look at my profile does it look like i need friendsyes...yes you do I NEVER ASKED YOU

97 points what types of changes have been made in the united states to protect people from earthquakes? a. communities are no longer located along fault lines. b. building codes ensure that structures can withstand shaking. c. warnings go off when an earthquake is expected, and people evacuate the area. d. barriers have been built to prevent flooding by a tsunami.