Which was an argument used to dispute the theory of plate tectonics?

a. magnetic striping shows seafloor spreading.

b. mountain ranges in america and england match up.

c. mesosaurus fossils are found across long ocean distances.

d. continents cannot cut through the ocean floor.

Option D, Continents cannot cut through the ocean floor.

Explanation:

It was believed earlier that oceans were the land bridges that used to connect  different geologic plates of planet earth earlier, had now sank down and thus there exists no connection between the tectonic plates. Therefore,  without any link or connection, continents cannot cut through the ocean floor.

Also as per the Land Bridge Theory , there has been continuous shifting of dry land due to which identical land species on different continents were found.

Hence, option D is correct

a "theory" a suggestion that is not 100 % accurate, or a figure. some people say its a theory because they of all the passed theory's about one subject. it depends sometimes theory might be accurate and sometimes they are.