One Hypothesis Explains the Extinction of Dinosaurs by Suggesting That

Multiple Choice

One hypothesis explains the extinction of dinosaurs by suggesting that a large meteorite collided with the Earth some 65 million years ago. This hypothesis is best supported by all of the following observations EXCEPT:

A) a worldwide layer of iridium that appears in rocks of the extinction age.
B) a meteorite impact site in Canada that is large enough and of the extinction age.
C) the worldwide presence of microscopic glassy spheres, called microtektites, in sediments of the correct age to coincide with the extinctions.
D) the fact that iridium is rare on Earth but is common on meteorites.