The crust is the earths outer core, and is around

The ocean basins and the continents compose the crust, the outermost layer. Earth's crust is between three and 46 miles (five and 75 km) deep. The thickest parts are under the continents and the thinnest parts are under the oceans.

Hope this helps!!

the answers for the whole quick check is

1. b

2. b

3. a

4. c

5. b

6. a

7. d

the answer is a i had that before