The second choice is a fragment, not a complete sentence.
I believe the correct choice is number one, because if you turn the sentence around, it answers the question of why the crowd is gathered. You may want to confirm on the website chompchomp.com (Grammar Bites).
nah ! it can't be true harry said he only dates me XD
Answer:
Our restless Earth is always changing. Tectonic plates drift, the crust quakes, and volcanoes erupt. Air pressure falls, storms form, and precipitation results. Learn how these powerful forces shape our air, land, water, and weather—and constantly transform our planet. Explore how our response to Earth's changes will impact our future on Earth and discover how your choices impact our future Earth.
Answer:2 smallest parts
Explanation: Cause it saids it now
