The Esposito family went hiking on a tall mountain. Mrs. Esposito picked up a shell fossil on the top of the mountain. The fossil was
once a shelled organism that lived in the ocean. The family had
different ideas about how the fossil ended up there. This is what they
thought:
Mrs. Esposito: A bird picked up the organism and dropped the shell as
it flew over the mountain.
Mr. Esposito: Water, ice, or wind eventually carried the fossil to the
top of the mountain.
Rosa: A mountain formed in an area that was once covered by ocean.
Sofia: The fossil flowed out of a volcano that rose up from the ocean
floor.
Write the statement that you most agree with
and why. Then describe your ideas about how
a fossil could end up on the top of a tall
mountain.
Ok

c. earths continental crust is thicker than its lithosphere.

because, the lithosphere is the outermost layer of the earth/ 100 km thick and is defined by its machanical properties.the lithosphere contains oceanic and continental crust that varies in age and thickness across locations and geologic time. the lithosphere is the coolest layer of the earth in terms of temperature. the term lithosphere should not be confused with the use of "geosphere" which is used to indicate all of earth systems, including the atmosphere, hydrosphere   and biosphere. the surface of the earth can be divided into the continental crust and the oceanic crust.   the continental crust is made mostly of granite while the oceanic crust is made of basalt. the average thickness of the continental crust is 25 miles and the average thickness of the oceanic crust is 5 miles.   three types of rock, igneous, sedimentary, and metamorphic, make up the surface of the earth. that's why 3 option is preferable.