Why is the K-Pg line so important to the timeline of earth’s history? Group of answer choices

It shows where a massive growth event took place that led to the diversity of organisms on Earth. After this time, life on Earth became more varied and created millions of new species of organisms.

It shows where a massive growth event took place that led to the end of the dinosaurs and the start of a new age where mammals became more prevalent.

It shows where a massive extinction event happened that led to the end of the pre-mammals and the start of a new age where the dinosaurs became more prevalent.

It shows where a massive extinction event happened that led to the end of the dinosaurs and the start of a new age where mammals become more prevalent.