Question

which of these describes the most widely held scientific theory on what catastrophic events led to the cretaceous-tertiary extinction about 65.5 million years ago, which eventually led to the extinction of dinosaurs?
a a shift in earths rotation
b the evolution of bigger, stronger animals
c the impact of one or more large asteroids
d the earth movement further away from the sun

Explanation:

The most widely accepted scientific theory for the Cretaceous-Tertiary extinction (which killed non-avian dinosaurs) is supported by extensive evidence, including the discovery of a large impact crater in Chicxulub, Mexico, and global layers of iridium (a rare element common in asteroids) dating to 65.5 million years ago. The other options lack sufficient scientific consensus or evidence to explain this mass extinction event.

Answer:

C. the impact of one or more large asteroids