Read the following introductory paragraph for an explanatory essay:

1. The sun sets over the Pacific Ocean, a brilliant flaming orb that shoots fire across the sky, its sparks bouncing off the water. 2. California is a place of great beauty and majesty. 3. From mountains to oceans, farmland to big cities, there is so much to see and do. 4. A vacation to California allows one to explore nature's wonders, experience unique foods, and enjoy family fun parks.


Which sentence is the hook?

4
1
2
3