Go to the US Geological Survey website https://earthquake.usgs.gov/ and/or use your book to locate the
five largest mountain ranges on the Earth. Keep in mind that not all mountains are on land.
Find out if there are plate boundaries near them that are trenches. Only those that have nearby trenches need to be considered for the next part.
Use the USGS website to determine the order (from most to least) of the mountain ranges (or areas of specific mountain ranges) that are the most active in terms of earthquakes (use number and severity of earthquakes and compare all the ranges on your list).