D'aja wants to show the increasing number of tsunamis in the world in the last twenty years. Which text feature would best allow the audience to understand the connection?

(A) A chart showing how high the ocean waves get during a tsunami
(B) An image of a cutout of an ocean experiencing a tsunami
(C) A note at the bottom of the page listing the years of large-scale tsunamis that have occurred in the last 20 years
(D) A special subheader that summarizes the method scientists use to collect data