How did new evidence found by Marie Tharp and Bruce Heezen add onto continental drift and create the theory of plate tectonics? (1 point)

Question

AThey proposed that continents are pieces of the Earth's crust floating on top of the mantle.
They proposed that continents are pieces of the Earth's crust floating on top of the mantle.

B They showed what the oceans’ floors looked like helped explain how continents move over time.
They showed what the oceans’ floors looked like helped explain how continents move over time.

They showed fossils of the same organism on multiple continents helped explain how continents float on the mantle.
They showed fossils of the same organism on multiple continents helped explain how continents float on the mantle.

They proposed that mountain ranges at the edge of continents helped explain how continents used to fit together.

Answer 1

The correct answer is:

B They showed what the oceans’ floors looked like helped explain how continents move over time.

Marie Tharp and Bruce Heezen's detailed mapping of the ocean floors provided critical evidence for the process of seafloor spreading, which was a key component in the development of the theory of plate tectonics. Their work illustrated the geological features of the ocean basins, supporting the idea that the continents are not static and that they can move over geologic time.