Answer the following question given this paragraph: 

Continental crust is much thicker than oceanic crust. It is 35 kilometers (22 miles) thick on average, but it varies a lot. Continental crust is made up of many different rocks. All three major rock types — igneous, metamorphic, and sedimentary — are found in the crust. On average, continental crust is much less dense (2.7 g/cm3) than oceanic crust. Since it is less dense, it rises higher above the mantle than oceanic crust.


Q: How thick is the earth's continental crust, on average?

 Choices:

- 60 kilometers

- 15 kilometers

- 25 kilometers

- 35 kilometers

A:
35 kilometers
