A team of engineers wants to study hard, solid rock under the surface of Earth. The team is considering drilling down in the Indian Ocean (1) and in Sri Lanka (2). Where will the team find hard, solid rock?
a) Under 1 and 2, because Earth’s entire outer layer is made of hard, solid rock.
b) Only under 2, because Earth’s outer layer is made of hard, solid rock underneath continents but not under the ocean.
c) Neither under 1 nor 2, because there is water underneath both places.
d) Neither under 1 nor 2, because there is sand and gravel underneath both places.
