When data from the Earth's magnetic field locked inside seafloor rocks became widely understood, most skeptics around the world were convinced that seafloor spreading occurs and that the concept of plate tectonics is valid. a. Trueb. False

True

Explanation:

Plate tectonics is a scientific theory that postulates that there is massive motion of seven large plates and movement of smaller plates in earth's lithosphere.

Alfred Wengener was the first to postulate the continental drift but he couldn't establish what kind of motion caused this drifting. Many years later, when the data from the earth magnetic field locked inside sea flocks, it became more glaring that continental drift or sea floor spreading was real.